diff --git a/bin/duneproject b/bin/duneproject
index 6dbc10fcf70ed730f6f061ec943dc71ec11f2b83..11822f93bdeb670d315580ba74c5aab67de1a900 100755
--- a/bin/duneproject
+++ b/bin/duneproject
@@ -913,7 +913,7 @@ macroname="$macroname""Macros.cmake"
 echo "- $PROJECT/cmake/modules/Makefile.am"
 cat> "$PROJECT/cmake/modules/Makefile.am" <<EOF
 MODULES = $macroname
-modulesdir = $(datadir)/dune/cmake/modules
+modulesdir = \$(datadir)/dune/cmake/modules
 dist_modules_DATA = \${MODULES}
 
 include \$(top_srcdir)/am/global-rules