diff --git a/macosx/PeerProgressIndicatorCell.m b/macosx/PeerProgressIndicatorCell.m
index f346bc386..fbc4ed918 100644
--- a/macosx/PeerProgressIndicatorCell.m
+++ b/macosx/PeerProgressIndicatorCell.m
@@ -81,7 +81,8 @@
             NSImage * checkImage = [NSImage imageNamed: @"CompleteCheck.png"];
             
             const NSSize imageSize = [checkImage size];
-            const NSRect rect = NSMakeRect(NSMidX(cellFrame) - imageSize.width * 0.5, NSMidY(cellFrame) - imageSize.height * 0.5,
+            const NSRect rect = NSMakeRect(floor(NSMidX(cellFrame) - imageSize.width * 0.5),
+                                            floor(NSMidY(cellFrame) - imageSize.height * 0.5),
                                             imageSize.width, imageSize.height);
             
             if ([NSApp isOnSnowLeopardOrBetter])