diff --git a/CTAssetsPickerController/CTAssetScrollView.m b/CTAssetsPickerController/CTAssetScrollView.m
index ee0c9a6a..6c170188 100644
--- a/CTAssetsPickerController/CTAssetScrollView.m
+++ b/CTAssetsPickerController/CTAssetScrollView.m
@@ -552,7 +552,7 @@ - (void)removePlayerLoadedTimeRangesObserver
         [self.player removeObserver:self forKeyPath:@"currentItem.loadedTimeRanges"];
     }
     @catch (NSException *exception) {
-        // do noting
+        // do nothing
     }
 }
 
@@ -570,7 +570,7 @@ - (void)removePlayerRateObserver
         [self.player removeObserver:self forKeyPath:@"rate"];
     }
     @catch (NSException *exception) {
-        // do noting
+        // do nothing
     }    
 }
 
diff --git a/CTAssetsPickerController/CTAssetsPickerController.m b/CTAssetsPickerController/CTAssetsPickerController.m
index 59c99651..9621b239 100644
--- a/CTAssetsPickerController/CTAssetsPickerController.m
+++ b/CTAssetsPickerController/CTAssetsPickerController.m
@@ -376,7 +376,12 @@ - (void)addKeyValueObserver
 
 - (void)removeKeyValueObserver
 {
-    [self removeObserver:self forKeyPath:@"selectedAssets"];
+    @try {
+        [self removeObserver:self forKeyPath:@"selectedAssets"];
+    }
+    @catch (NSException *exception) {
+        // do nothing
+    }
 }