diff --git a/Makefile b/Makefile
index 182bdaf..da06c85 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,13 @@
 CPP=g++
 
-EXEC := 00-const-vars/const.o 00-const-vars/no-const.o 01-inline-functions/inline.o 01-inline-functions/no-inline.o
+OBJS := 00-const-vars/const.o 00-const-vars/no-const.o 01-inline-functions/inline.o 01-inline-functions/no-inline.o
 
-all: $(EXEC)
+all: $(OBJS)
 
 %.o: %.cpp
-	g++ $< -o $@ -c
+	$(CPP) $< -o $@ -c
+
+.PHONY: clean all
 
 clean:
-	$(RM) $(EXEC)
+	$(RM) $(OBJS)