diff --git a/behaviors/ImageBehavior.php b/behaviors/ImageBehavior.php
index 17819bf..7531c80 100755
--- a/behaviors/ImageBehavior.php
+++ b/behaviors/ImageBehavior.php
@@ -27,7 +27,7 @@
         /**
          * @var string Image path for dummy
          */
-        public $dummy_path = '/images/image-not-found';
+        public $dummy_path = '/images/image-not-found.png';
         
         /**
          * @inheritdoc
diff --git a/behaviors/SaveImgBehavior.php b/behaviors/SaveImgBehavior.php
index 450a1a2..2ba2578 100755
--- a/behaviors/SaveImgBehavior.php
+++ b/behaviors/SaveImgBehavior.php
@@ -22,7 +22,7 @@
         /**
          * @var string Image path for dummy
          */
-        public $dummy_path = '/images/image-not-found';
+        public $dummy_path = '/images/image-not-found.png';
         
         public function events()
         {
--
libgit2 0.21.4