diff --git a/functions/base.bash b/functions/base.bash
index c7dc909..bbb6f2f 100644
--- a/functions/base.bash
+++ b/functions/base.bash
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 function rh {
   history | awk '{a[$2]++}END{for(i in a){print a[i] " " i}}' | sort -rn | head
 }