diff --git a/Pmodules/modbuild.in b/Pmodules/modbuild.in
index eae8a9c..570e499 100644
--- a/Pmodules/modbuild.in
+++ b/Pmodules/modbuild.in
@@ -261,6 +261,7 @@ parse_args() {
 			opt_build_target=${1:2}
 			;;
 		--clean-install )
+			opt_force_rebuild='yes'
 			opt_clean_install='yes'
 			;;
 		--update-modulefiles )