diff --git a/toolchain/dependencies/check-host-sed.sh b/toolchain/dependencies/check-host-sed.sh
index 71f0eb9e8c..188b7210b7 100755
--- a/toolchain/dependencies/check-host-sed.sh
+++ b/toolchain/dependencies/check-host-sed.sh
@@ -1,3 +1,5 @@
+#!/bin/sh
+
 SEDLIST="/usr/bin/sed /bin/sed sed gnused gsed"
 
 for SED in $SEDLIST