diff --git a/src/mesa/SConscript b/src/mesa/SConscript
index ff5bf60..af83db0 100644
--- a/src/mesa/SConscript
+++ b/src/mesa/SConscript
@@ -24,7 +24,7 @@
 	
 	main_sources = [
 		'main/api_arrayelt.c',
-		'main/api_exec.c'
+		'main/api_exec.c',
 		'main/api_loopback.c',
 		'main/api_noop.c',
 		'main/api_validate.c',