diff --git a/Makefile b/Makefile
index 27df73ed17a6..d6744bed3cf1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,7 @@
 DIRS = $(RIOTCPU) core drivers sys 
 
+.PHONY: all clean doc
+
 all:
 	mkdir -p $(BINDIR)
 	@for i in $(DIRS) ; do "$(MAKE)" -C $$i ; done ;
diff --git a/Makefile.base b/Makefile.base
index a05d65d1c2e9..10b321c7de52 100644
--- a/Makefile.base
+++ b/Makefile.base
@@ -7,6 +7,8 @@ SRC = $(wildcard *.c)
 OBJ = $(SRC:%.c=$(BINDIR)%.o)
 DEP = $(SRC:%.c=$(BINDIR)%.d)
 
+.PHONY: clean
+
 include $(RIOTCPU)/Makefile.base
 include $(RIOTBOARD)/Makefile.base
 
diff --git a/Makefile.include b/Makefile.include
index 5186db8ecf20..011aae49724d 100644
--- a/Makefile.include
+++ b/Makefile.include
@@ -40,6 +40,8 @@ endif
 endif
 endif
 
+.PHONY: all clean flash doc term
+
 ## make script for your project. Build RIOT-base here!
 all: $(PROJBINDIR)/$(PROJECT).a
 	@echo "Building project $(PROJECT) for $(BOARD) w/ MCU $(MCU)."