diff --git a/etc/requirements.txt b/etc/requirements.txt
index 3f19bdd4..a90571c8 100644
--- a/etc/requirements.txt
+++ b/etc/requirements.txt
@@ -34,7 +34,7 @@ cyordereddict==0.2.2
 bottleneck==1.0.0
 
 # lru_cache
-functools32==3.2.3.post2; python_version < "3.0"
+functools32==3.2.3.post2;python_version<'3.0'
 
 contextlib2==0.4.0