diff --git a/dlls/mshtml/htmltablecell.c b/dlls/mshtml/htmltablecell.c
index 8e3a8d17f84..12895a2452b 100644
--- a/dlls/mshtml/htmltablecell.c
+++ b/dlls/mshtml/htmltablecell.c
@@ -135,15 +135,36 @@ static HRESULT WINAPI HTMLTableCell_get_rowSpan(IHTMLTableCell *iface, LONG *p)
 static HRESULT WINAPI HTMLTableCell_put_colSpan(IHTMLTableCell *iface, LONG v)
 {
     HTMLTableCell *This = impl_from_IHTMLTableCell(iface);
-    FIXME("(%p)->(%d)\n", This, v);
-    return E_NOTIMPL;
+    nsresult nsres;
+
+    TRACE("(%p)->(%d)\n", This, v);
+
+    if(v <= 0)
+        return E_INVALIDARG;
+
+    nsres = nsIDOMHTMLTableCellElement_SetColSpan(This->nscell, v);
+    if(NS_FAILED(nsres)) {
+        ERR("SetColSpan failed: %08x\n", nsres);
+        return E_FAIL;
+    }
+
+    return S_OK;
 }
 
 static HRESULT WINAPI HTMLTableCell_get_colSpan(IHTMLTableCell *iface, LONG *p)
 {
     HTMLTableCell *This = impl_from_IHTMLTableCell(iface);
-    FIXME("(%p)->(%p)\n", This, p);
-    return E_NOTIMPL;
+    nsresult nsres;
+
+    TRACE("(%p)->(%p)\n", This, p);
+
+    nsres = nsIDOMHTMLTableCellElement_GetColSpan(This->nscell, p);
+    if(NS_FAILED(nsres)) {
+        ERR("GetColSpan failed: %08x\n", nsres);
+        return E_FAIL;
+    }
+
+    return S_OK;
 }
 
 static HRESULT WINAPI HTMLTableCell_put_align(IHTMLTableCell *iface, BSTR v)
diff --git a/dlls/mshtml/tests/dom.c b/dlls/mshtml/tests/dom.c
index ac0ddff346c..db1de1f9153 100644
--- a/dlls/mshtml/tests/dom.c
+++ b/dlls/mshtml/tests/dom.c
@@ -7325,6 +7325,23 @@ static void test_td_elem(IHTMLDocument2 *doc, IHTMLElement *div)
     ok(hres == S_OK, "get_rowSpan failed: %08x\n", hres);
     ok(lval == 2, "rowSpan = %d\n", lval);
 
+    hres = IHTMLTableCell_get_colSpan(cell, &lval);
+    ok(hres == S_OK, "get_rowSpan failed: %08x\n", hres);
+    ok(lval == 1, "rowSpan = %d\n", lval);
+
+    hres = IHTMLTableCell_put_colSpan(cell, -1);
+    ok(hres == E_INVALIDARG, "put_rowSpan failed: %08x\n", hres);
+
+    hres = IHTMLTableCell_put_colSpan(cell, 0);
+    ok(hres == E_INVALIDARG, "put_rowSpan failed: %08x\n", hres);
+
+    hres = IHTMLTableCell_put_colSpan(cell, 2);
+    ok(hres == S_OK, "put_rowSpan failed: %08x\n", hres);
+
+    hres = IHTMLTableCell_get_colSpan(cell, &lval);
+    ok(hres == S_OK, "get_rowSpan failed: %08x\n", hres);
+    ok(lval == 2, "rowSpan = %d\n", lval);
+
     IHTMLTableCell_Release(cell);
 }