diff --git a/setup.cfg b/setup.cfg
index c5c7fd14..fde228c9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -35,7 +35,7 @@ install_requires =
     Flask-Script~=2.0
     Flask-SQLAlchemy~=2.4
     Flask-WTF~=0.14,>=0.14.3  # See b76da172652da94c1f9c4b2fdd965375da8a2c3f
-	WTForms~=2.2.1,<2.3  # See #567
+    WTForms~=2.2.1,<2.3  # See #567
     Flask~=1.1
     itsdangerous~=1.1
     Jinja2~=2.11