Index: reactos/win32ss/gdi/gdi32/objects/font.c
===================================================================
--- reactos/win32ss/gdi/gdi32/objects/font.c	(revision 74543)
+++ reactos/win32ss/gdi/gdi32/objects/font.c	(working copy)
@@ -310,17 +310,24 @@
 EnumFontFamiliesW(HDC hdc, LPCWSTR lpszFamily, FONTENUMPROCW lpEnumFontFamProc,
                   LPARAM lParam)
 {
-    LOGFONTW LogFont;
+    LOGFONTW LogFont, *plf;
 
-    ZeroMemory(&LogFont, sizeof(LOGFONTW));
-    LogFont.lfCharSet = DEFAULT_CHARSET;
-    if (NULL != lpszFamily)
+    if (lpszFamily)
     {
         if (!*lpszFamily) return 1;
+
+        /* EnumFontFamilies uses lfCharSet, lfFaceName and lfPitchAndFamily */
         lstrcpynW(LogFont.lfFaceName, lpszFamily, LF_FACESIZE);
+        LogFont.lfCharSet = DEFAULT_CHARSET;
+        LogFont.lfPitchAndFamily = 0;
+        plf = &LogFont;
     }
+    else
+    {
+        plf = NULL;
+    }
 
-    return IntEnumFontFamilies(hdc, &LogFont, lpEnumFontFamProc, lParam, TRUE);
+    return IntEnumFontFamilies(hdc, plf, lpEnumFontFamProc, lParam, TRUE);
 }