diff --git a/main/forum/forumfunction.inc.php b/main/forum/forumfunction.inc.php
index 05dee829fa..e8a6e25704 100644
--- a/main/forum/forumfunction.inc.php
+++ b/main/forum/forumfunction.inc.php
@@ -310,7 +310,12 @@ function show_add_forum_form($inputvalues=array()) {
 	 if (isset($inputvalues['forum_image']) && strlen($inputvalues['forum_image']) > 0) { 	 
 	
 		 $image_path = api_get_path(WEB_COURSE_PATH).api_get_course_path().'/upload/forum/images/'.$inputvalues['forum_image'];
+
+		 /*
 		 $image_size = @getimagesize($image_path);
+		 */
+		 $image_size = @getimagesize(api_url_to_local_path($image_path));
+
 		 $img_attributes = '';
 		 if (!empty($image_size)) {
 			 if ($image_size[0] > 100 || $image_size[1] > 100) {