diff --git a/dlls/usp10/tests/usp10.c b/dlls/usp10/tests/usp10.c
index 22a4ab2624e..a7fbc7363c9 100644
--- a/dlls/usp10/tests/usp10.c
+++ b/dlls/usp10/tests/usp10.c
@@ -837,7 +837,7 @@ static int CALLBACK enumFontProc( const LOGFONTA *lpelfe, const TEXTMETRICA *lpn
         return 1;
 
     i = rp->range;
-    while (i > sizeof(DWORD)*8)
+    while (i >= sizeof(DWORD)*8)
     {
         idx++;
         i -= (sizeof(DWORD)*8);