diff --git a/CHANGELOG.md b/CHANGELOG.md
index f0b0641be..6278f42a6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,3 +13,8 @@ Version 1.5.2
 - allow to filters users shown by `UserPickerType` based on flags. This flags do an additional filter based on the flags assigned in permissions groups;
 - add a method to filters users by permissions groups flags in `UserRepository`
 
+Master branch
+=============
+
+- fix error when interval is hour only
+
diff --git a/Doctrine/Type/NativeDateIntervalType.php b/Doctrine/Type/NativeDateIntervalType.php
index bc4938e97..38c704a2d 100644
--- a/Doctrine/Type/NativeDateIntervalType.php
+++ b/Doctrine/Type/NativeDateIntervalType.php
@@ -92,8 +92,8 @@ class NativeDateIntervalType extends DateIntervalType
             
             return $current.$unit;
             
-        } elseif (\preg_match('/([0-9]{2}\:[0-9]{2}:[0-9]{2})/', $v) === 1) {
-            $tExploded = explode(':', $v);
+        } elseif (\preg_match('/([0-9]{2}\:[0-9]{2}:[0-9]{2})/', $current) === 1) {
+            $tExploded = explode(':', $current);
             $intervalSpec = 'T';
             $intervalSpec.= $tExploded[0].'H';
             $intervalSpec.= $tExploded[1].'M';