diff --git a/macosx/Controller.m b/macosx/Controller.m
index ded00ced6..5fb97f28a 100644
--- a/macosx/Controller.m
+++ b/macosx/Controller.m
@@ -171,13 +171,12 @@ static void sleepCallback(void * controller, io_service_t y, natural_t messageTy
     //make sure another Transmission.app isn't running already
     BOOL othersRunning = NO;
     
-    #warning enable when 10.6-only
-    /*if ([NSApp isOnSnowLeopardOrBetter])
+    if ([NSApp isOnSnowLeopardOrBetter])
     {
-        NSArray * apps = [NSRunningApplication runningApplicationsWithBundleIdentifier: [[NSBundle mainBundle] bundleIdentifier]];
+        NSArray * apps = [NSRunningApplicationSL runningApplicationsWithBundleIdentifier: [[NSBundle mainBundle] bundleIdentifier]];
         othersRunning = [apps count] > 1;
     }
-    else*/
+    else
     {
         NSString * bundleIdentifier = [[NSBundle mainBundle] bundleIdentifier];
         const int processIdentifier = [[NSProcessInfo processInfo] processIdentifier];
diff --git a/macosx/NSApplicationAdditions.h b/macosx/NSApplicationAdditions.h
index ec7c37f4f..c468e6cb9 100644
--- a/macosx/NSApplicationAdditions.h
+++ b/macosx/NSApplicationAdditions.h
@@ -23,6 +23,7 @@
  *****************************************************************************/
 
 #define QLPreviewPanelSL NSClassFromString(@"QLPreviewPanel")
+#define NSRunningApplicationSL NSClassFromString(@"NSRunningApplication")
 
 @interface NSApplication (NSApplicationAdditions)
 
diff --git a/macosx/TorrentTableView.h b/macosx/TorrentTableView.h
index 9eb8f09b0..4678b53d0 100644
--- a/macosx/TorrentTableView.h
+++ b/macosx/TorrentTableView.h
@@ -31,7 +31,7 @@
 
 #define GROUP_SEPARATOR_HEIGHT 18.0
 
-#warning revert
+#warning uncomment
 @interface TorrentTableView : NSOutlineView //<QLPreviewPanelDataSource, QLPreviewPanelDelegate>
 {
     IBOutlet Controller * fController;