diff --git a/macosx/PrefsController.mm b/macosx/PrefsController.mm
index 9d3b7b9c2..8ba61821a 100644
--- a/macosx/PrefsController.mm
+++ b/macosx/PrefsController.mm
@@ -209,6 +209,8 @@ static NSString* const kWebUIURLFormat = @"http://localhost:%ld/";
     self.window.toolbar = toolbar;
 
     [self setWindowSize];
+    [self.window center];
+
     [self setPrefView:nil];
 
     //set special-handling of magnet link add window checkbox