diff --git a/build.sh b/build.sh
index f7d8c69..0f737c1 100755
--- a/build.sh
+++ b/build.sh
@@ -1,2 +1,2 @@
-#!/bin/bash
+#!/bin/sh
 gcc src/fe.c -DFE_STANDALONE -O3 -o fe -Wall -Wextra -std=c89 -pedantic