diff --git a/RMUniversalAlert.m b/RMUniversalAlert.m
index 1b7e998..e0d18f8 100644
--- a/RMUniversalAlert.m
+++ b/RMUniversalAlert.m
@@ -20,9 +20,9 @@
 
 @interface RMUniversalAlert ()
 
-@property (nonatomic) UIAlertController *alertController;
-@property (nonatomic) UIAlertView *alertView;
-@property (nonatomic) UIActionSheet *actionSheet;
+@property (nonatomic, weak) UIAlertController *alertController;
+@property (nonatomic, weak) UIAlertView *alertView;
+@property (nonatomic, weak) UIActionSheet *actionSheet;
 
 @property (nonatomic, assign) BOOL hasCancelButton;
 @property (nonatomic, assign) BOOL hasDestructiveButton;