diff --git a/MZFormSheetPresentationController/MZFormSheetPresentationController.m b/MZFormSheetPresentationController/MZFormSheetPresentationController.m
index 635f73c..02c0ae2 100644
--- a/MZFormSheetPresentationController/MZFormSheetPresentationController.m
+++ b/MZFormSheetPresentationController/MZFormSheetPresentationController.m
@@ -207,8 +207,9 @@ - (void)setupBackgroundBlurView {
         
 #if __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
         if ([UIViewPropertyAnimator class]) {
+            __weak MZFormSheetPresentationController *weakSelf = self;
             self.propertyAnimator = [[UIViewPropertyAnimator alloc] initWithDuration:1.0 curve:UIViewAnimationCurveLinear animations:^{
-                self.blurBackgroundView.effect = nil;
+                weakSelf.blurBackgroundView.effect = nil;
             }];
         }
 #endif