diff --git a/build/scripts/build_haiku_image b/build/scripts/build_haiku_image
index d6c2589b8e..14be4a9191 100755
--- a/build/scripts/build_haiku_image
+++ b/build/scripts/build_haiku_image
@@ -46,7 +46,7 @@ else
 	ln=ln
 	mkdir=mkdir
 	rm=rm
-	mkindex=
+	mkindex=mkindex
 fi
 
 # create the image and mount it