diff --git a/dev/deduplicatefilelinesrecursively.sh b/dev/deduplicatefilelinesrecursively.sh
index 2aaa05c0934..ad64e546829 100755
--- a/dev/deduplicatefilelinesrecursively.sh
+++ b/dev/deduplicatefilelinesrecursively.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # Recursively deduplicate file lines on a per file basis
 # Useful to deduplicate language files
 #