diff --git a/Source/NSMatrix.m b/Source/NSMatrix.m
index 13b1a3231..15f8a9cbc 100644
--- a/Source/NSMatrix.m
+++ b/Source/NSMatrix.m
@@ -1000,7 +1000,7 @@ static SEL getSel;
 
 - (void) selectAll: (id)sender
 {
-  unsigned	i, j;
+  int i, j;
 
   /* Can't select all if only one can be selected.  */
   if (_mode == NSRadioModeMatrix)