diff --git a/vcsserver/lib/rc_cache/backends.py b/vcsserver/lib/rc_cache/backends.py
--- a/vcsserver/lib/rc_cache/backends.py
+++ b/vcsserver/lib/rc_cache/backends.py
@@ -304,7 +304,7 @@ def get_mutex_lock(client, lock_key, loc
         def acquire(self, wait=True):
             try:
                 return self.lock.acquire(wait)
-            except redis_lock.AlreadyAquited:
+            except redis_lock.AlreadyAcquired:
                 return False
 
         def release(self):