diff --git a/win32ss/gdi/ntgdi/freetype.c b/win32ss/gdi/ntgdi/freetype.c
index dd5e0064a5..46751c64be 100644
--- a/win32ss/gdi/ntgdi/freetype.c
+++ b/win32ss/gdi/ntgdi/freetype.c
@@ -4760,6 +4760,12 @@ GetFontPenalty(const LOGFONTW *               LogFont,
         }
     }
 
+    if (TM->tmCharSet == DEFAULT_CHARSET || (Otm->otmfsSelection & 0xC0))
+    {
+        /* UNDOCUMENTED: Candidate's charset or otmfsSelection is invalid. It smells bad. */
+        GOT_PENALTY("UNDOCUMENTED:BadFont", 10000);
+    }
+
     if (Penalty < 200)
     {
         DPRINT("WARNING: Penalty:%ld < 200: RequestedNameW:%ls, "