diff --git a/Makefile b/Makefile
index 21e83b5..63dfc06 100644
--- a/Makefile
+++ b/Makefile
@@ -122,4 +122,4 @@ ${BINDIR}/%${-g}: ${TESTDIR}/%.cpp ${patsubst %, ${OBJDIR}/%${-g}.o, ${OBJS}}
 endif
 
 ${DIRS}:
-	mkdir $@
\ No newline at end of file
+	mkdir -p $@
\ No newline at end of file