diff --git a/src/gui_mac.c b/src/gui_mac.c
index 4357c89..2c33562 100644
--- a/src/gui_mac.c
+++ b/src/gui_mac.c
@@ -1840,7 +1840,7 @@
 	p.v -= gui.scrollbar_height;
     p.v -= p.v % gui.char_height;
     p.v += 2 * gui.border_width;
-    if (gui.which_scrollbars[SBAR_BOTTOM]);
+    if (gui.which_scrollbars[SBAR_BOTTOM])
 	p.v += gui.scrollbar_height;
 
     ZoomWindowIdeal(whichWindow, thePart, &p);