diff --git a/generate_yaml_makefile.sh b/generate_yaml_makefile.sh
index a6f014f..7767a1d 100755
--- a/generate_yaml_makefile.sh
+++ b/generate_yaml_makefile.sh
@@ -2,7 +2,7 @@
 
 cd $1
 
-toplevel_dirs=xyz
+toplevel_dirs=$2
 all_yaml=`find $toplevel_dirs -name "*.yaml"`
 
 echo "nobase_yaml_DATA = \\"