diff --git a/Makefile b/Makefile
index 340e881..b006d96 100644
--- a/Makefile
+++ b/Makefile
@@ -110,7 +110,7 @@ export LIBPATHS	:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib)
 all: $(BUILD)
 
 $(BUILD):
-	@[ -d $@ ] || mkdir -p $@
+	@$(shell [ ! -d $(BUILD) ] && mkdir -p $(BUILD))
 	@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
 
 #-------------------------------------------------------------------------------