diff --git a/src/lib/efl/interfaces/efl_file.eo b/src/lib/efl/interfaces/efl_file.eo
index 517c5d6964..f863dcb828 100644
--- a/src/lib/efl/interfaces/efl_file.eo
+++ b/src/lib/efl/interfaces/efl_file.eo
@@ -14,7 +14,7 @@ interface Efl.File {
 
               @since 1.8]]
 
-            return: bool;
+            return: bool; [[$true = success, $false = error]]
          }
          get {
             [[Get the source mmaped file from where an image object must fetch the real
@@ -27,9 +27,11 @@ interface Efl.File {
               @since 1.10]]
          }
          values {
-            f: const(Eina.File)*; [[The mmaped file]]
-            key: const(char)*; [[The image key in $file (if its an Eet one), or
-                                 $null, otherwise.]]
+            f: const(Eina.File)*; [[The handler to an Eina_File that will be used as image source]]
+            key: const(char)* @optional; [[The group that the image belongs to, in case 
+                                           it's an EET(including Edje case) file. This can be used
+                                           as a key inside evas image cache if this is a normal image
+                                           file not eet file.]]
          }
       }
       @property file {