diff --git a/dll/win32/shell32/dialogs/fprop.cpp b/dll/win32/shell32/dialogs/fprop.cpp
index 9433883cfd9..33386794aef 100644
--- a/dll/win32/shell32/dialogs/fprop.cpp
+++ b/dll/win32/shell32/dialogs/fprop.cpp
@@ -74,7 +74,7 @@ class CStubWindow32 : public CWindowImpl<CStubWindow32>
 public:
     DECLARE_WND_CLASS_EX(_T("StubWindow32"), 0, COLOR_WINDOWTEXT)
 
-    BEGIN_MSG_MAP(CPaletteWindow)
+    BEGIN_MSG_MAP(CStubWindow32)
     END_MSG_MAP()
 };
 
@@ -119,7 +119,10 @@ SH_ShowPropertiesDialog(LPCWSTR pwszPath, LPCITEMIDLIST pidlFolder, PCUITEMID_CH
     DWORD exstyle = WS_EX_WINDOWEDGE | WS_EX_APPWINDOW;
     CStubWindow32 stub;
     if (!stub.Create(NULL, NULL, NULL, style, exstyle))
+    {
+        ERR("StubWindow32 creation failed\n");
         return E_FAIL;
+    }
 
     /* Handle files and folders */
     PROPSHEETHEADERW Header;