diff --git a/Makefile b/Makefile
index 69e8eaa..c93b48f 100644
--- a/Makefile
+++ b/Makefile
@@ -6,6 +6,7 @@ INSTALL_DIRS = $(SUBDIRS:%=install-%)
 UNINSTALL_DIRS = $(SUBDIRS:%=uninstall-%)
 CLEAN_DIRS   = $(SUBDIRS:%=clean-%)
 
+.PHONY: all install uninstall clean
 .PHONY: $(SUBDIRS) $(BUILD_DIRS) $(INSTALL_DIRS) $(CLEAN_DIRS)