diff --git a/dlls/shell32/folders.c b/dlls/shell32/folders.c
index 34e51426487..cf26caf8b06 100644
--- a/dlls/shell32/folders.c
+++ b/dlls/shell32/folders.c
@@ -198,7 +198,8 @@ static HRESULT WINAPI IExtractIconW_fnGetIconLocation(IExtractIconW * iface, UIN
 	GUID const * riid;
 	LPITEMIDLIST	pSimplePidl = ILFindLastID(This->pidl);
 
-	TRACE("(%p) (flags=%u %p %u %p %p)\n", This, uFlags, szIconFile, cchMax, piIndex, pwFlags);
+	TRACE("(%p) (flags=%u, %s, %u, %p, %p)\n", This, uFlags, debugstr_w(szIconFile),
+                cchMax, piIndex, pwFlags);
 
 	if (pwFlags)
 	  *pwFlags = 0;
diff --git a/dlls/shell32/shellitem.c b/dlls/shell32/shellitem.c
index d688f17673e..b0af6d61e5f 100644
--- a/dlls/shell32/shellitem.c
+++ b/dlls/shell32/shellitem.c
@@ -61,7 +61,7 @@ static HRESULT WINAPI ShellItem_QueryInterface(IShellItem2 *iface, REFIID riid,
 {
     ShellItem *This = impl_from_IShellItem2(iface);
 
-    TRACE("(%p,%p,%p)\n", iface, riid, ppv);
+    TRACE("(%p, %s, %p)\n", iface, debugstr_guid(riid), ppv);
 
     if (!ppv) return E_INVALIDARG;
 
diff --git a/dlls/shell32/shfldr_unixfs.c b/dlls/shell32/shfldr_unixfs.c
index 884fc0a86b6..9df761fcbc7 100644
--- a/dlls/shell32/shfldr_unixfs.c
+++ b/dlls/shell32/shfldr_unixfs.c
@@ -2338,22 +2338,22 @@ static HRESULT CreateUnixFolder(IUnknown *outer, REFIID riid, void **ppv, const
 }
 
 HRESULT WINAPI UnixFolder_Constructor(IUnknown *pUnkOuter, REFIID riid, LPVOID *ppv) {
-    TRACE("(pUnkOuter=%p, riid=%p, ppv=%p)\n", pUnkOuter, riid, ppv);
+    TRACE("(pUnkOuter=%p, riid=%s, ppv=%p)\n", pUnkOuter, debugstr_guid(riid), ppv);
     return CreateUnixFolder(pUnkOuter, riid, ppv, &CLSID_UnixFolder);
 }
 
 HRESULT WINAPI UnixDosFolder_Constructor(IUnknown *pUnkOuter, REFIID riid, LPVOID *ppv) {
-    TRACE("(pUnkOuter=%p, riid=%p, ppv=%p)\n", pUnkOuter, riid, ppv);
+    TRACE("(pUnkOuter=%p, riid=%s, ppv=%p)\n", pUnkOuter, debugstr_guid(riid), ppv);
     return CreateUnixFolder(pUnkOuter, riid, ppv, &CLSID_UnixDosFolder);
 }
 
 HRESULT WINAPI FolderShortcut_Constructor(IUnknown *pUnkOuter, REFIID riid, LPVOID *ppv) {
-    TRACE("(pUnkOuter=%p, riid=%p, ppv=%p)\n", pUnkOuter, riid, ppv);
+    TRACE("(pUnkOuter=%p, riid=%s, ppv=%p)\n", pUnkOuter, debugstr_guid(riid), ppv);
     return CreateUnixFolder(pUnkOuter, riid, ppv, &CLSID_FolderShortcut);
 }
 
 HRESULT WINAPI MyDocuments_Constructor(IUnknown *pUnkOuter, REFIID riid, LPVOID *ppv) {
-    TRACE("(pUnkOuter=%p, riid=%p, ppv=%p)\n", pUnkOuter, riid, ppv);
+    TRACE("(pUnkOuter=%p, riid=%s, ppv=%p)\n", pUnkOuter, debugstr_guid(riid), ppv);
     return CreateUnixFolder(pUnkOuter, riid, ppv, &CLSID_MyDocuments);
 }
 
@@ -2390,7 +2390,7 @@ static void UnixSubFolderIterator_Destroy(UnixSubFolderIterator *iterator) {
 static HRESULT WINAPI UnixSubFolderIterator_IEnumIDList_QueryInterface(IEnumIDList* iface, 
     REFIID riid, void** ppv)
 {
-    TRACE("(iface=%p, riid=%p, ppv=%p)\n", iface, riid, ppv);
+    TRACE("(iface=%p, riid=%s, ppv=%p)\n", iface, debugstr_guid(riid), ppv);
     
     if (!ppv) return E_INVALIDARG;
     
diff --git a/dlls/shell32/shlview.c b/dlls/shell32/shlview.c
index b7634682595..5990982a34c 100644
--- a/dlls/shell32/shlview.c
+++ b/dlls/shell32/shlview.c
@@ -3502,8 +3502,8 @@ static HRESULT WINAPI shellfolderviewdual_GetIDsOfNames(
     ITypeInfo *ti;
     HRESULT hr;
 
-    TRACE("(%p,%p,%p,%u,%d,%p)\n", This, riid, rgszNames, cNames, lcid,
-            rgDispId);
+    TRACE("(%p, %s, %p, %u, %d, %p)\n", This, debugstr_guid(riid), rgszNames,
+            cNames, lcid, rgDispId);
 
     hr = get_typeinfo(IShellFolderViewDual3_tid, &ti);
     if (SUCCEEDED(hr))
@@ -3520,8 +3520,9 @@ static HRESULT WINAPI shellfolderviewdual_Invoke(IShellFolderViewDual3 *iface,
     ITypeInfo *ti;
     HRESULT hr;
 
-    TRACE("(%p,%d,%p,%d,%u,%p,%p,%p,%p)\n", This, dispIdMember, riid, lcid,
-            wFlags, pDispParams, pVarResult, pExcepInfo, puArgErr);
+    TRACE("(%p, %d, %s, %d, %u, %p, %p, %p, %p)\n", This, dispIdMember,
+            debugstr_guid(riid), lcid, wFlags, pDispParams, pVarResult,
+            pExcepInfo, puArgErr);
 
     hr = get_typeinfo(IShellFolderViewDual3_tid, &ti);
     if (SUCCEEDED(hr))