diff --git a/Makefile b/Makefile
index 7b7ce81..9d661d2 100644
--- a/Makefile
+++ b/Makefile
@@ -51,18 +51,20 @@ define rmfiles_if_exist
 	done
 endef
 
-define rmdir_if_empty
-	@if [ -d "$1" ]; then \
-		if [ -z "$$(find "$1" -mindepth 1 -maxdepth 1 -print -quit)" ]; then \
-			echo "Removing empty directory $1"; \
-			rm -r $1; \
+define rmdirs_if_empty
+	@for dir in $1; do \
+		if [ -d "$$dir" ]; then \
+			if [ -z "$$(find "$$dir" -mindepth 1 -maxdepth 1 -print -quit)" ]; \
+			then \
+				echo "Removing empty directory $$dir"; \
+				rm -r $$dir; \
+			fi; \
 		fi; \
-	fi
+	done
 endef
 
 clean:
 	$(call rmfiles_if_exist,$(EXECPATH) $(DEP) $(OBJ))
-	$(call rmdir_if_empty,$(BINDIR))
-	$(call rmdir_if_empty,$(OBJDIR))
+	$(call rmdirs_if_empty,$(BINDIR) $(OBJDIR))
 
 .PHONY: all clean