diff --git a/scripts/mod-build.sh b/scripts/mod-build.sh
old mode 100644
new mode 100755
index 894abee..35d5fb3
--- a/scripts/mod-build.sh
+++ b/scripts/mod-build.sh
@@ -1,3 +1,4 @@
+#!/bin/bash
 
 BASENAME=arm-mod-linux-gnueabihf
 OPTS_BASE="-O3 -mcpu=cortex-a7 -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard -mvectorize-with-neon-quad"