diff --git a/endpoints/verbs.py b/endpoints/verbs.py
index f91a73565..8f43d1db6 100644
--- a/endpoints/verbs.py
+++ b/endpoints/verbs.py
@@ -58,7 +58,7 @@ def _open_stream(formatter, namespace, repository, tag, synthetic_image_id, imag
   return stream.read
 
 
-def _sign_sythentic_image(verb, linked_storage_uuid, queue_file):
+def _sign_synthetic_image(verb, linked_storage_uuid, queue_file):
   signature = None
   try:
     signature = signer.detached_sign(queue_file)
@@ -224,7 +224,7 @@ def _repo_verb(namespace, repository, tag, verb, formatter, sign=False, checker=
 
   if sign and signer.name:
     signing_args = (verb, derived.uuid, signing_queue_file)
-    QueueProcess.run_process(_sign_sythentic_image, signing_args, finished=_cleanup)
+    QueueProcess.run_process(_sign_synthetic_image, signing_args, finished=_cleanup)
 
   # Close the database handle here for this process before we send the long download.
   database.close_db_filter(None)