diff --git a/README.md b/README.md
index b73a047..80bc408 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,7 @@ sub-directory.
    e.g. `~/src/example.c`
 
 ```C
+    #include <stdio.h>
     #include <stdlib.h>
     #include <editline.h>