diff --git a/requirements.txt b/requirements.txt
index 25f0400970..1b016a554d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ oslo.serialization>=1.10.0 # Apache-2.0
 oslo.service>=1.10.0 # Apache-2.0
 oslo.utils>=3.14.0 # Apache-2.0
 oslo.concurrency>=3.8.0 # Apache-2.0
-PyMySQL>=0.6.2  # MIT License
+PyMySQL>=0.6.2 # MIT License
 Babel>=2.3.4 # BSD
 six>=1.9.0 # MIT
 stevedore>=1.10.0 # Apache-2.0