diff --git a/unix/tkUnixRFont.c b/unix/tkUnixRFont.c

index cce59a8..78df47a 100644

--- a/unix/tkUnixRFont.c

+++ b/unix/tkUnixRFont.c

@@ -271,7 +271,7 @@ InitFont(

      */

     set = FcFontSort(0, pattern, FcTrue, NULL, &result);

-    if (!set) {

+    if (!set || set->nfont == 0) {

 	ckfree(fontPtr);

 	return NULL;

     }