diff --git a/homeassistant/helpers/template.py b/homeassistant/helpers/template.py
index 6d6fb1ed200..99eb0a9c034 100644
--- a/homeassistant/helpers/template.py
+++ b/homeassistant/helpers/template.py
@@ -616,8 +616,9 @@ def base64_decode(value):
 def ordinal(value):
     """Perform ordinal conversion."""
     return str(value) + (list(['th', 'st', 'nd', 'rd'] + ['th'] * 6)
-                         [(int(str(value)[-1])) % 10] if not
-                         int(str(value)[-2:]) % 100 in range(11, 14) else 'th')
+                         [(int(str(value)[-1])) % 10] if
+                         int(str(value)[-2:]) % 100 not in range(11, 14)
+                         else 'th')
 
 
 @contextfilter