diff --git a/Greenshot/Drawing/DrawableContainer.cs b/Greenshot/Drawing/DrawableContainer.cs
index 3f2b7d144..41d265d99 100644
--- a/Greenshot/Drawing/DrawableContainer.cs
+++ b/Greenshot/Drawing/DrawableContainer.cs
@@ -54,11 +54,13 @@ namespace Greenshot.Drawing {
 
 		protected virtual void Dispose(bool disposing) {
 			if (disposing) {
-				for (int i = 0; i < grippers.Length; i++) {
-                    if(grippers[i] != null) {
-					    grippers[i].Dispose();
-					    grippers[i] = null;
-                    }
+				if (grippers != null) {
+					for (int i = 0; i < grippers.Length; i++) {
+						if (grippers[i] != null) {
+							grippers[i].Dispose();
+							grippers[i] = null;
+						}
+					}
 				}
 
 				FieldAggregator aggProps = parent.FieldAggregator;