diff --git a/pagure/api/__init__.py b/pagure/api/__init__.py
index ed5a175..f88eea7 100644
--- a/pagure/api/__init__.py
+++ b/pagure/api/__init__.py
@@ -45,7 +45,7 @@ class APIERROR(enum.Enum):
     EPRSCORE = 'This request does not have the minimum review score '\
         'necessary to be merged'
     ENOASSIG = 'Only the assignee can merge this review'
-    ENOTASSIG = 'This request must be assigned to be merged'
+    ENOTASSIGNED = 'This request must be assigned to be merged'
     ENOUSER = 'No such user found'
 
 
diff --git a/pagure/api/fork.py b/pagure/api/fork.py
index 7ed327e..0162b05 100644
--- a/pagure/api/fork.py
+++ b/pagure/api/fork.py
@@ -312,7 +312,8 @@ def api_pull_request_merge(repo, requestid, username=None):
 
     if repo.settings.get('Only_assignee_can_merge_pull-request', False):
         if not request.assignee:
-            raise pagure.exceptions.APIError(403, error_code=APIERROR.ENOTASSIG)
+            raise pagure.exceptions.APIError(
+                403, error_code=APIERROR.ENOTASSIGNED)
 
         if request.assignee.username != flask.g.fas_user.username:
             raise pagure.exceptions.APIError(403, error_code=APIERROR.ENOASSIG)