diff --git a/resources/assets/sass/_components.scss b/resources/assets/sass/_components.scss
index d00d1fe9a..1f34166c6 100644
--- a/resources/assets/sass/_components.scss
+++ b/resources/assets/sass/_components.scss
@@ -210,7 +210,6 @@ body.flexbox-support #entity-selector-wrap .popup-body .form-group {
 
 .image-manager-sidebar {
   width: 300px;
-  margin-left: 1px;
   overflow-y: auto;
   overflow-x: hidden;
   border-left: 1px solid #DDD;
@@ -524,8 +523,8 @@ body.flexbox-support #entity-selector-wrap .popup-body .form-group {
   font-size: 12px;
   line-height: 1.2;
   top: 88px;
-  left: -26px;
-  width: 148px;
+  left: -12px;
+  width: 160px;
   background: $negative;
   padding: $-xs;
   color: white;
@@ -535,7 +534,7 @@ body.flexbox-support #entity-selector-wrap .popup-body .form-group {
   content: '';
   position: absolute;
   top: -6px;
-  left: 64px;
+  left: 44px;
   width: 0;
   height: 0;
   border-left: 6px solid transparent;
diff --git a/resources/lang/en/validation.php b/resources/lang/en/validation.php
index 0b6a1c170..e05cfca9d 100644
--- a/resources/lang/en/validation.php
+++ b/resources/lang/en/validation.php
@@ -69,6 +69,7 @@ return [
     'timezone'             => 'The :attribute must be a valid zone.',
     'unique'               => 'The :attribute has already been taken.',
     'url'                  => 'The :attribute format is invalid.',
+    'is_image'             => 'The :attribute must be a valid image.',
 
     // Custom validation lines
     'custom' => [