diff --git a/dlls/comdlg32/colordlg.c b/dlls/comdlg32/colordlg.c
index ca758e3614b..92523b34db3 100644
--- a/dlls/comdlg32/colordlg.c
+++ b/dlls/comdlg32/colordlg.c
@@ -1344,7 +1344,7 @@ BOOL WINAPI ChooseColorA( LPCHOOSECOLORA lpChCol )
 	  lpcc->lpTemplateName = HeapAlloc( GetProcessHeap(), 0, len * sizeof(WCHAR) );
 	  MultiByteToWideChar( CP_ACP, 0, lpChCol->lpTemplateName, -1, (LPWSTR)lpcc->lpTemplateName, len );
       } else {
-	  lpcc->lpTemplateName = (LPWSTR)lpChCol->lpTemplateName;
+	  lpcc->lpTemplateName = (LPCWSTR)lpChCol->lpTemplateName;
       }
   }
 
diff --git a/dlls/comdlg32/filedlg.c b/dlls/comdlg32/filedlg.c
index d2bb63c3002..a3e9aa56a3b 100644
--- a/dlls/comdlg32/filedlg.c
+++ b/dlls/comdlg32/filedlg.c
@@ -293,7 +293,7 @@ static BOOL WINAPI GetFileName95(FileOpenDlgInfos *fodInfos)
                                      (LPARAM) fodInfos);
     else
       lRes = DialogBoxIndirectParamA(COMDLG32_hInstance,
-                                     (LPDLGTEMPLATEA) template,
+                                     (LPCDLGTEMPLATEA) template,
                                      fodInfos->ofnInfos->hwndOwner,
                                      FileOpenDlgProc95,
                                      (LPARAM) fodInfos);
diff --git a/dlls/comdlg32/filedlg31.c b/dlls/comdlg32/filedlg31.c
index 55c94b8b876..7e1de22f0d5 100644
--- a/dlls/comdlg32/filedlg31.c
+++ b/dlls/comdlg32/filedlg31.c
@@ -167,7 +167,7 @@ static BOOL FD31_ScanDir(HWND hWnd, LPWSTR newPath)
  * 				FD31_GetFileType		[internal]
  */
 
-static LPWSTR FD31_GetFileType(LPWSTR cfptr, LPWSTR fptr, WORD index)
+static LPCWSTR FD31_GetFileType(LPCWSTR cfptr, LPCWSTR fptr, const WORD index)
 {
   int n, i;
   i = 0;
@@ -187,7 +187,7 @@ static LPWSTR FD31_GetFileType(LPWSTR cfptr, LPWSTR fptr, WORD index)
 	  return fptr;
 	fptr += lstrlenW(fptr) + 1;
     }
-  return (LPWSTR) FILE_star; /* FIXME */
+  return FILE_star; /* FIXME */
 }
 
 /***********************************************************************
@@ -743,7 +743,7 @@ void FD31_MapOfnStructA(const LPOPENFILENAMEA ofnA, LPOPENFILENAMEW ofnW, BOOL o
             ofnW->lpTemplateName = usBuffer.Buffer;
         }
         else /* numbered resource */
-            ofnW->lpTemplateName = (LPWSTR) ofnA->lpTemplateName;
+            ofnW->lpTemplateName = (LPCWSTR) ofnA->lpTemplateName;
     }
 }
 
diff --git a/dlls/comdlg32/filedlgbrowser.c b/dlls/comdlg32/filedlgbrowser.c
index 1ec37ca3697..8f04736bb25 100644
--- a/dlls/comdlg32/filedlgbrowser.c
+++ b/dlls/comdlg32/filedlgbrowser.c
@@ -389,7 +389,7 @@ static HRESULT WINAPI IShellBrowserImpl_BrowseObject(IShellBrowser *iface,
         }
         /* create an absolute pidl */
         pidlTmp = COMDLG32_PIDL_ILCombine(fodInfos->ShellInfos.pidlAbsCurrent,
-                                                        (LPITEMIDLIST)pidl);
+                                                        (LPCITEMIDLIST)pidl);
     }
     else if(wFlags & SBSP_PARENT)
     {
@@ -401,7 +401,7 @@ static HRESULT WINAPI IShellBrowserImpl_BrowseObject(IShellBrowser *iface,
     else /* SBSP_ABSOLUTE is 0x0000 */
     {
         /* An absolute pidl (relative from the desktop) */
-        pidlTmp =  COMDLG32_PIDL_ILClone((LPITEMIDLIST)pidl);
+        pidlTmp =  COMDLG32_PIDL_ILClone((LPCITEMIDLIST)pidl);
         psfTmp = GetShellFolderFromPidl(pidlTmp);
     }
 
diff --git a/dlls/comdlg32/fontdlg.c b/dlls/comdlg32/fontdlg.c
index 5def9a335eb..4db8d224e32 100644
--- a/dlls/comdlg32/fontdlg.c
+++ b/dlls/comdlg32/fontdlg.c
@@ -341,7 +341,7 @@ static INT WINAPI FontFamilyEnumProc(const ENUMLOGFONTEXW *lpElfex,
 {
     LPCFn_ENUMSTRUCT e;
     e=(LPCFn_ENUMSTRUCT)lParam;
-    return AddFontFamily( lpElfex, (NEWTEXTMETRICEXW *) metrics,
+    return AddFontFamily( lpElfex, (const NEWTEXTMETRICEXW *) metrics,
             dwFontType, e->lpcf32w, e->hWnd1, e);
 }