diff --git a/libstring/Makefile b/libstring/Makefile
index 8f498ee..047456b 100644
--- a/libstring/Makefile
+++ b/libstring/Makefile
@@ -27,7 +27,7 @@ format:
 
 docs:
 	clang-doc --format=md --output docs -p . $$(git ls-files '*.h')
-	mkdir -o ../docs/libs/libstring
+	mkdir -p ../docs/libs/libstring
 	cp ./docs/GlobalNamespace/*.md ../docs/libs/libstring
 
 .PHONY: all clean format