diff --git a/README.md b/README.md
index 3029d06b9c7ecbde2a9f4a3a2a8c117168010ac1..983e64ff1fb2ed6cbc49cd3eb70b37e072ecb23b 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 실전코딩2 실습
 
-## printf
+## 'printf'
 
 ### stdio.h