diff --git a/Makefile b/Makefile
index 073e976361..ac61a58dd6 100644
--- a/Makefile
+++ b/Makefile
@@ -380,8 +380,8 @@ css:
 		exit 1; \
 	fi;
 	npx lesshint public/less/
-	npx lessc --clean-css="--s0 -b" public/less/index.less public/css/index.css
-	$(foreach file, $(filter-out public/less/themes/_base.less, $(wildcard public/less/themes/*)),npx lessc --clean-css="--s0 -b" public/less/themes/$(notdir $(file)) > public/css/theme-$(notdir $(call strip-suffix,$(file))).css;)
+	npx -p less lessc --clean-css="--s0 -b" public/less/index.less public/css/index.css
+	$(foreach file, $(filter-out public/less/themes/_base.less, $(wildcard public/less/themes/*)),npx -p less lessc --clean-css="--s0 -b" public/less/themes/$(notdir $(file)) > public/css/theme-$(notdir $(call strip-suffix,$(file))).css;)
 	npx postcss --use autoprefixer --no-map --replace public/css/*
 
 	@diff=$$(git diff public/css/*); \