diff --git a/extensions/tf2/AMBuilder b/extensions/tf2/AMBuilder
index f1006018..8b614d30 100644
--- a/extensions/tf2/AMBuilder
+++ b/extensions/tf2/AMBuilder
@@ -3,6 +3,7 @@ import os
 
 sdk = SM.sdkInfo['ep2v']
 compiler = SM.DefaultHL2Compiler('extensions/tf2', 'ep2v')
+compiler['CFLAGS'].append('-Wno-parentheses')
 
 name = 'game.tf2.ext.' + sdk['ext']
 extension = AMBuild.AddJob(name)