diff --git a/gtk2_ardour/wscript b/gtk2_ardour/wscript
index 3f9d0d0373..025cd78271 100644
--- a/gtk2_ardour/wscript
+++ b/gtk2_ardour/wscript
@@ -196,7 +196,7 @@ def build(bld):
 		simpleline.cc
 		simplerect.cc
 		splash.cc
-                startup.cc
+		startup.cc
 		streamview.cc
 		tape_region_view.cc
 		tempo_dialog.cc