diff --git a/dlls/mshtml/editor.c b/dlls/mshtml/editor.c
index 129040a6d1c..2ffefd26eaa 100644
--- a/dlls/mshtml/editor.c
+++ b/dlls/mshtml/editor.c
@@ -541,7 +541,7 @@ static HRESULT exec_fontname(HTMLDocument *This, DWORD cmdexecopt, VARIANT *in,
         char *stra;
 
         if(V_VT(in) != VT_BSTR) {
-            FIXME("Unsupported vt=%d\n", V_VT(out));
+            FIXME("Unsupported fontname %s\n", debugstr_variant(out));
             return E_INVALIDARG;
         }
 
@@ -602,7 +602,7 @@ static HRESULT exec_forecolor(HTMLDocument *This, DWORD cmdexecopt, VARIANT *in,
 
             nsICommandParams_Release(nsparam);
         }else {
-            FIXME("unsupported in vt=%d\n", V_VT(in));
+            FIXME("unsupported forecolor %s\n", debugstr_variant(in));
         }
 
         update_doc(This, UPDATE_UI);
@@ -641,7 +641,7 @@ static HRESULT exec_fontsize(HTMLDocument *This, DWORD cmdexecopt, VARIANT *in,
             set_font_size(This, V_BSTR(in));
             break;
         default:
-            FIXME("unsupported vt %d\n", V_VT(in));
+            FIXME("unsupported fontsize %s\n", debugstr_variant(in));
         }
 
         update_doc(This, UPDATE_UI);
@@ -839,7 +839,7 @@ static HRESULT exec_composesettings(HTMLDocument *This, DWORD cmdexecopt, VARIAN
     WCHAR *ptr;
 
     if(out || !in || V_VT(in) != VT_BSTR) {
-        WARN("invalid arg\n");
+        WARN("invalid arg %s\n", debugstr_variant(in));
         return E_INVALIDARG;
     }
 
@@ -948,7 +948,7 @@ static HRESULT exec_setdirty(HTMLDocument *This, DWORD cmdexecopt, VARIANT *in,
     if(V_VT(in) == VT_BOOL)
         set_dirty(This, V_BOOL(in));
     else
-        FIXME("unsupported vt=%d\n", V_VT(in));
+        FIXME("unsupported arg %s\n", debugstr_variant(in));
 
     return S_OK;
 }
diff --git a/dlls/mshtml/htmlelem3.c b/dlls/mshtml/htmlelem3.c
index 392b4e47c17..805e8aa1620 100644
--- a/dlls/mshtml/htmlelem3.c
+++ b/dlls/mshtml/htmlelem3.c
@@ -249,7 +249,7 @@ static HRESULT WINAPI HTMLElement3_get_disabled(IHTMLElement3 *iface, VARIANT_BO
         return hres;
 
     if(V_VT(var) != VT_BOOL) {
-        FIXME("vt %d\n", V_VT(var));
+        FIXME("value is %s\n", debugstr_variant(var));
         return E_NOTIMPL;
     }
 
diff --git a/dlls/mshtml/htmlevent.c b/dlls/mshtml/htmlevent.c
index 290ca715572..cf2d808dac4 100644
--- a/dlls/mshtml/htmlevent.c
+++ b/dlls/mshtml/htmlevent.c
@@ -439,7 +439,7 @@ static HRESULT WINAPI HTMLEventObj_put_returnValue(IHTMLEventObj *iface, VARIANT
     TRACE("(%p)->(%s)\n", This, debugstr_variant(&v));
 
     if(V_VT(&v) != VT_BOOL) {
-        FIXME("unsupported vt %d\n", V_VT(&v));
+        FIXME("unsupported value %s\n", debugstr_variant(&v));
         return DISP_E_BADVARTYPE;
     }
 
@@ -1242,7 +1242,7 @@ HRESULT set_event_handler(event_target_t **event_target, nsIDOMNode *nsnode, HTM
         return set_event_handler_disp(event_target, nsnode, doc, eid, V_DISPATCH(var));
 
     default:
-        FIXME("not supported vt=%d\n", V_VT(var));
+        FIXME("not handler %s\n", debugstr_variant(var));
         /* fall through */
     case VT_EMPTY:
         return E_NOTIMPL;
diff --git a/dlls/mshtml/htmlform.c b/dlls/mshtml/htmlform.c
index 8905208153b..5041345ceaf 100644
--- a/dlls/mshtml/htmlform.c
+++ b/dlls/mshtml/htmlform.c
@@ -347,7 +347,7 @@ static HRESULT WINAPI HTMLFormElement_get_onsubmit(IHTMLFormElement *iface, VARI
 static HRESULT WINAPI HTMLFormElement_put_onreset(IHTMLFormElement *iface, VARIANT v)
 {
     HTMLFormElement *This = impl_from_IHTMLFormElement(iface);
-    FIXME("(%p)->(v)\n", This);
+    FIXME("(%p)->(%s)\n", This, debugstr_variant(&v));
     return E_NOTIMPL;
 }
 
diff --git a/dlls/mshtml/htmlinput.c b/dlls/mshtml/htmlinput.c
index 41fefb3cbbb..6abdd42885c 100644
--- a/dlls/mshtml/htmlinput.c
+++ b/dlls/mshtml/htmlinput.c
@@ -910,14 +910,14 @@ static HRESULT WINAPI HTMLInputTextElement_get_name(IHTMLInputTextElement *iface
 static HRESULT WINAPI HTMLInputTextElement_put_status(IHTMLInputTextElement *iface, VARIANT v)
 {
     HTMLInputElement *This = impl_from_IHTMLInputTextElement(iface);
-    FIXME("(%p)->(v)\n", This);
+    FIXME("(%p)->(%s)\n", This, debugstr_variant(&v));
     return E_NOTIMPL;
 }
 
 static HRESULT WINAPI HTMLInputTextElement_get_status(IHTMLInputTextElement *iface, VARIANT *p)
 {
     HTMLInputElement *This = impl_from_IHTMLInputTextElement(iface);
-    TRACE("(%p)->(v)\n", This);
+    TRACE("(%p)->(%p)\n", This, p);
     return E_NOTIMPL;
 }
 
diff --git a/dlls/mshtml/htmlnode.c b/dlls/mshtml/htmlnode.c
index a2786e65fba..ed20c3ffce9 100644
--- a/dlls/mshtml/htmlnode.c
+++ b/dlls/mshtml/htmlnode.c
@@ -524,7 +524,7 @@ static HRESULT WINAPI HTMLDOMNode_insertBefore(IHTMLDOMNode *iface, IHTMLDOMNode
         break;
     }
     default:
-        FIXME("unimplemented vt %d\n", V_VT(&refChild));
+        FIXME("unimplemented refChild %s\n", debugstr_variant(&refChild));
         return E_NOTIMPL;
     }
 
@@ -727,14 +727,12 @@ static HRESULT WINAPI HTMLDOMNode_put_nodeValue(IHTMLDOMNode *iface, VARIANT v)
 {
     HTMLDOMNode *This = impl_from_IHTMLDOMNode(iface);
 
-    TRACE("(%p)->()\n", This);
+    TRACE("(%p)->(%s)\n", This, debugstr_variant(&v));
 
     switch(V_VT(&v)) {
     case VT_BSTR: {
         nsAString val_str;
 
-        TRACE("bstr %s\n", debugstr_w(V_BSTR(&v)));
-
         nsAString_InitDepend(&val_str, V_BSTR(&v));
         nsIDOMNode_SetNodeValue(This->nsnode, &val_str);
         nsAString_Finish(&val_str);
@@ -743,7 +741,7 @@ static HRESULT WINAPI HTMLDOMNode_put_nodeValue(IHTMLDOMNode *iface, VARIANT v)
     }
 
     default:
-        FIXME("unsupported vt %d\n", V_VT(&v));
+        FIXME("unsupported value %s\n", debugstr_variant(&v));
     }
 
     return E_NOTIMPL;
diff --git a/dlls/mshtml/htmloption.c b/dlls/mshtml/htmloption.c
index 0fb685bf541..5a250d7b6c3 100644
--- a/dlls/mshtml/htmloption.c
+++ b/dlls/mshtml/htmloption.c
@@ -510,17 +510,17 @@ static HRESULT WINAPI HTMLOptionElementFactory_create(IHTMLOptionElementFactory
     if(V_VT(&text) == VT_BSTR)
         IHTMLOptionElement_put_text(*optelem, V_BSTR(&text));
     else if(V_VT(&text) != VT_EMPTY)
-        FIXME("Unsupported text vt=%d\n", V_VT(&text));
+        FIXME("Unsupported text %s\n", debugstr_variant(&text));
 
     if(V_VT(&value) == VT_BSTR)
         IHTMLOptionElement_put_value(*optelem, V_BSTR(&value));
     else if(V_VT(&value) != VT_EMPTY)
-        FIXME("Unsupported value vt=%d\n", V_VT(&value));
+        FIXME("Unsupported value %s\n", debugstr_variant(&value));
 
     if(V_VT(&defaultselected) != VT_EMPTY)
-        FIXME("Unsupported defaultselected vt=%d\n", V_VT(&defaultselected));
+        FIXME("Unsupported defaultselected %s\n", debugstr_variant(&defaultselected));
     if(V_VT(&selected) != VT_EMPTY)
-        FIXME("Unsupported selected vt=%d\n", V_VT(&selected));
+        FIXME("Unsupported selected %s\n", debugstr_variant(&selected));
 
     return S_OK;
 }
diff --git a/dlls/mshtml/htmlscript.c b/dlls/mshtml/htmlscript.c
index e98cbb0187a..cb5cbedc447 100644
--- a/dlls/mshtml/htmlscript.c
+++ b/dlls/mshtml/htmlscript.c
@@ -209,7 +209,7 @@ static HRESULT WINAPI HTMLScriptElement_get_readyState(IHTMLScriptElement *iface
 static HRESULT WINAPI HTMLScriptElement_put_onerror(IHTMLScriptElement *iface, VARIANT v)
 {
     HTMLScriptElement *This = impl_from_IHTMLScriptElement(iface);
-    FIXME("(%p)->(v(%d))\n", This, V_VT(&v));
+    FIXME("(%p)->(%s)\n", This, debugstr_variant(&v));
     return E_NOTIMPL;
 }
 
diff --git a/dlls/mshtml/htmlstylesheet.c b/dlls/mshtml/htmlstylesheet.c
index 3fa6c278d6a..3b855e5a500 100644
--- a/dlls/mshtml/htmlstylesheet.c
+++ b/dlls/mshtml/htmlstylesheet.c
@@ -318,7 +318,7 @@ static HRESULT WINAPI HTMLStyleSheetsCollection_item(IHTMLStyleSheetsCollection
 {
     HTMLStyleSheetsCollection *This = impl_from_IHTMLStyleSheetsCollection(iface);
 
-    TRACE("(%p)->(%p %p)\n", This, pvarIndex, pvarResult);
+    TRACE("(%p)->(%s %p)\n", This, debugstr_variant(pvarIndex), pvarResult);
 
     switch(V_VT(pvarIndex)) {
     case VT_I4: {
@@ -345,7 +345,7 @@ static HRESULT WINAPI HTMLStyleSheetsCollection_item(IHTMLStyleSheetsCollection
         return E_NOTIMPL;
 
     default:
-        WARN("Invalid vt=%d\n", V_VT(pvarIndex));
+        WARN("Invalid index %s\n", debugstr_variant(pvarIndex));
     }
 
     return E_INVALIDARG;
diff --git a/dlls/mshtml/olecmd.c b/dlls/mshtml/olecmd.c
index b0e40e02520..893284325e3 100644
--- a/dlls/mshtml/olecmd.c
+++ b/dlls/mshtml/olecmd.c
@@ -221,7 +221,7 @@ static HRESULT exec_print(HTMLDocument *This, DWORD nCmdexecopt, VARIANT *pvaIn,
     nsIPrintSettings *settings;
     nsresult nsres;
 
-    TRACE("(%p)->(%d %p %p)\n", This, nCmdexecopt, pvaIn, pvaOut);
+    TRACE("(%p)->(%d %s %p)\n", This, nCmdexecopt, debugstr_variant(pvaIn), pvaOut);
 
     if(pvaOut)
         FIXME("unsupported pvaOut\n");
@@ -263,7 +263,7 @@ static HRESULT exec_print(HTMLDocument *This, DWORD nCmdexecopt, VARIANT *pvaIn,
                 case VT_NULL:
                     break;
                 default:
-                    WARN("V_VT(opts) = %d\n", V_VT(opts));
+                    WARN("opts = %s\n", debugstr_variant(opts));
                 }
             }
 
@@ -276,7 +276,7 @@ static HRESULT exec_print(HTMLDocument *This, DWORD nCmdexecopt, VARIANT *pvaIn,
                 case VT_NULL:
                     break;
                 default:
-                    WARN("V_VT(opts) = %d\n", V_VT(opts+1));
+                    WARN("opts[1] = %s\n", debugstr_variant(opts+1));
                 }
             }
 
@@ -287,7 +287,7 @@ static HRESULT exec_print(HTMLDocument *This, DWORD nCmdexecopt, VARIANT *pvaIn,
             break;
         }
         default:
-            FIXME("unsupported vt %x\n", V_VT(pvaIn));
+            FIXME("unsupported arg %s\n", debugstr_variant(pvaIn));
         }
     }
 
diff --git a/dlls/mshtml/oleobj.c b/dlls/mshtml/oleobj.c
index 261eda3b0c0..7db44400a03 100644
--- a/dlls/mshtml/oleobj.c
+++ b/dlls/mshtml/oleobj.c
@@ -351,7 +351,7 @@ static HRESULT WINAPI OleObject_SetClientSite(IOleObject *iface, IOleClientSite
     hres = get_client_disp_property(This->doc_obj->client, DISPID_AMBIENT_SILENT, &silent);
     if(SUCCEEDED(hres)) {
         if(V_VT(&silent) != VT_BOOL)
-            WARN("V_VT(silent) = %d\n", V_VT(&silent));
+            WARN("silent = %s\n", debugstr_variant(&silent));
         else if(V_BOOL(&silent))
             FIXME("silent == true\n");
     }
@@ -801,7 +801,7 @@ static HRESULT WINAPI OleControl_OnAmbientPropertyChange(IOleControl *iface, DIS
                 This->doc_obj->usermode = EDITMODE;
             }
         }else {
-            FIXME("V_VT(res)=%d\n", V_VT(&res));
+            FIXME("usermode=%s\n", debugstr_variant(&res));
         }
         return S_OK;
     case DISPID_AMBIENT_DLCONTROL:
@@ -820,7 +820,7 @@ static HRESULT WINAPI OleControl_OnAmbientPropertyChange(IOleControl *iface, DIS
                 hres = E_FAIL;
             }
         }else {
-            FIXME("V_VT(res)=%d\n", V_VT(&res));
+            FIXME("offlineconnected=%s\n", debugstr_variant(&res));
         }
         return S_OK;
     case DISPID_AMBIENT_SILENT:
@@ -836,7 +836,7 @@ static HRESULT WINAPI OleControl_OnAmbientPropertyChange(IOleControl *iface, DIS
                 hres = E_FAIL;
             }
         }else {
-            FIXME("V_VT(res)=%d\n", V_VT(&res));
+            FIXME("silent=%s\n", debugstr_variant(&res));
         }
         return S_OK;
     case DISPID_AMBIENT_USERAGENT:
diff --git a/dlls/mshtml/persist.c b/dlls/mshtml/persist.c
index 667a2f60de8..4c04ff2ba6f 100644
--- a/dlls/mshtml/persist.c
+++ b/dlls/mshtml/persist.c
@@ -289,7 +289,7 @@ void prepare_for_binding(HTMLDocument *This, IMoniker *mon, BOOL navigated_bindi
         hres = get_client_disp_property(This->doc_obj->client, DISPID_AMBIENT_SILENT, &silent);
         if(SUCCEEDED(hres)) {
             if(V_VT(&silent) != VT_BOOL)
-                WARN("V_VT(silent) = %d\n", V_VT(&silent));
+                WARN("silent = %s\n", debugstr_variant(&silent));
             else if(V_BOOL(&silent))
                 FIXME("silent == true\n");
         }
@@ -298,7 +298,7 @@ void prepare_for_binding(HTMLDocument *This, IMoniker *mon, BOOL navigated_bindi
                 DISPID_AMBIENT_OFFLINEIFNOTCONNECTED, &offline);
         if(SUCCEEDED(hres)) {
             if(V_VT(&offline) != VT_BOOL)
-                WARN("V_VT(offline) = %d\n", V_VT(&offline));
+                WARN("offline = %s\n", debugstr_variant(&offline));
             else if(V_BOOL(&offline))
                 FIXME("offline == true\n");
         }