diff --git a/Makefile b/Makefile
index 8002ccb..7d40c9e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 EMACS ?= emacs
 SHELL = bash
+
 CASK ?= $(shell command -v cask)
 ifeq ($(CASK),)
     $(error "Install cask (https://github.com/cask/cask)")
@@ -41,11 +42,11 @@ test: zmq compile
 .PHONY: clean
 clean:
 	make -C js clean
-	rm $(ELCFILES)
+	@rm $(ELCFILES) 2>/dev/null || true
 
 .PHONY: clean-cask
 clean-cask:
-	rm -rf .cask/
+	@rm -rf .cask/ 2>/dev/null || true
 
 .PHONY: widgets
 widgets:
diff --git a/js/Makefile b/js/Makefile
index 20335ce..f563e3f 100644
--- a/js/Makefile
+++ b/js/Makefile
@@ -1,3 +1,5 @@
+SHELL = bash
+
 NPM ?= $(shell command -v npm)
 ifeq ($(NPM),)
 	$(error "Node not installed (https://nodejs.org/en/)")
@@ -14,10 +16,10 @@ endif
 all: build
 
 clean:
-	rm -rf built/
+	@rm -rf built/ 2>/dev/null || true
 
 really-clean: clean
-	rm -rf node_modules
+	@rm -rf node_modules 2>/dev/null || true
 
 build: built/index.built.js