diff --git a/config.py b/config.py
index bedddcda7..4bb44fca2 100644
--- a/config.py
+++ b/config.py
@@ -197,4 +197,4 @@ class DefaultConfig(object):
   SYSTEM_SERVICE_BLACKLIST = []
 
   # Temporary tag expiration in seconds, this may actually be longer based on GC policy
-  PUSH_TEMP_TAG_EXPIRATION_S = 60 * 60
+  PUSH_TEMP_TAG_EXPIRATION_SEC = 60 * 60
diff --git a/endpoints/registry.py b/endpoints/registry.py
index 8222212a7..c901eed5b 100644
--- a/endpoints/registry.py
+++ b/endpoints/registry.py
@@ -469,7 +469,7 @@ def put_image_json(namespace, repository, image_id):
 
   # Create a temporary tag to prevent this image from getting garbage collected while the push
   # is in progress.
-  model.create_temporary_hidden_tag(repo, repo_image, app.config['PUSH_TEMP_TAG_EXPIRATION_S'])
+  model.create_temporary_hidden_tag(repo, repo_image, app.config['PUSH_TEMP_TAG_EXPIRATION_SEC'])
 
   uuid = repo_image.storage.uuid