diff --git a/src/macosx/native/sun/awt/AWTWindow.m b/src/macosx/native/sun/awt/AWTWindow.m
index f9a7919b4efdfb397afbc2ff55c795c4808b3ec8..86006ae89e25623d1c231469d03a4d4e6924cb44 100644
--- a/src/macosx/native/sun/awt/AWTWindow.m
+++ b/src/macosx/native/sun/awt/AWTWindow.m
@@ -261,7 +261,8 @@ AWT_ASSERT_APPKIT_THREAD;
 
 // returns id for the topmost window under mouse
 + (NSInteger) getTopmostWindowUnderMouseID {
-
+    NSInteger result = -1;
+    
     NSRect screenRect = [[NSScreen mainScreen] frame];
     NSPoint nsMouseLocation = [NSEvent mouseLocation];
     CGPoint cgMouseLocation = CGPointMake(nsMouseLocation.x, screenRect.size.height - nsMouseLocation.y);
@@ -274,11 +275,13 @@ AWT_ASSERT_APPKIT_THREAD;
             CGRect rect;
             CGRectMakeWithDictionaryRepresentation((CFDictionaryRef)[window objectForKey:(id)kCGWindowBounds], &rect);
             if (CGRectContainsPoint(rect, cgMouseLocation)) {
-                return [[window objectForKey:(id)kCGWindowNumber] integerValue];
+                result = [[window objectForKey:(id)kCGWindowNumber] integerValue];
+                break;
             }
         }
     }
-    return -1;
+    [windows release];
+    return result;
 }
 
 // checks that this window is under the mouse cursor and this point is not overlapped by others windows
diff --git a/src/macosx/native/sun/awt/CGraphicsDevice.m b/src/macosx/native/sun/awt/CGraphicsDevice.m
index 9b94b82abbcecc38c8c9c787f139cf8c26e52bf8..4d3b587c174a2e99ec68ebaa8375eb4cec8f2e51 100644
--- a/src/macosx/native/sun/awt/CGraphicsDevice.m
+++ b/src/macosx/native/sun/awt/CGraphicsDevice.m
@@ -66,7 +66,8 @@ static CFMutableArrayRef getAllValidDisplayModes(jint displayID){
             CFArrayAppendValue(validModes, cRef);
         }
     }
-
+    CFRelease(allModes);
+    
     CGDisplayModeRef currentMode = CGDisplayCopyDisplayMode(displayID);
 
     BOOL containsCurrentMode = NO;
@@ -81,6 +82,7 @@ static CFMutableArrayRef getAllValidDisplayModes(jint displayID){
     if (!containsCurrentMode) {
         CFArrayAppendValue(validModes, currentMode);
     }
+    CGDisplayModeRelease(currentMode);
 
     return validModes;
 }