diff --git a/extensions/tf2/AMBuilder b/extensions/tf2/AMBuilder
index 0ae5aea0..04c15166 100644
--- a/extensions/tf2/AMBuilder
+++ b/extensions/tf2/AMBuilder
@@ -17,7 +17,7 @@ binary.AddSourceFiles('extensions/tf2', [
 	'util.cpp',
 	'criticals.cpp',
 	'holiday.cpp',
-	'gameplayrules.cpp'
+	'gameplayrules.cpp',
 	'CDetour/detours.cpp',
 	'sdk/smsdk_ext.cpp',
 	'asm/asm.c'