diff --git a/QBImagePicker/QBAssetsViewController.m b/QBImagePicker/QBAssetsViewController.m
index fec84b5c..09a792e5 100644
--- a/QBImagePicker/QBAssetsViewController.m
+++ b/QBImagePicker/QBAssetsViewController.m
@@ -666,6 +666,12 @@ - (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollection
     
     CGFloat width = (CGRectGetWidth(self.view.frame) - 2.0 * (numberOfColumns - 1)) / numberOfColumns;
     
+    // Fatal Exception: NSInternalInconsistencyException negative sizes are not supported in the flow layout
+    // The width and height of the specified item. Both values must be greater than 0.
+    if (width <= 0) {
+        width = 1.0f;
+    }
+    
     return CGSizeMake(width, width);
 }