diff --git a/lemur/migrations/versions/c301c59688d2_.py b/lemur/migrations/versions/c301c59688d2_.py
index 8f1941b2..c96272ff 100644
--- a/lemur/migrations/versions/c301c59688d2_.py
+++ b/lemur/migrations/versions/c301c59688d2_.py
@@ -87,7 +87,7 @@ def update_key_type():
     conn = op.get_bind()
     start_time = time.time()
 
-    # Loop through all certificates are valid today or expired in last 30 days
+    # Loop through all certificates that are valid today or expired in the last 30 days.
     for cert_id, body in conn.execute(
             text(
                 "select id, body from certificates where bits < 1024 and not_after > CURRENT_DATE - 31 and key_type is null")