diff --git a/src/l7-app-detect.c b/src/l7-app-detect.c
index b9022f7487..41349202ba 100644
--- a/src/l7-app-detect.c
+++ b/src/l7-app-detect.c
@@ -118,8 +118,6 @@ void *L7AppDetectThread(void *td)
                     }
                 }
             }
-            mutex_unlock(&smsg->flow->m);
-
             /* XXX we need to improve this logic */
             smsg->flow->use_cnt--;
             mutex_unlock(&smsg->flow->m);