--- Makefile
+++ Makefile
@@ -73,6 +73,7 @@
 .endif
 
 post-patch:
+	@${FIND} ${WRKSRC}/easy-rsa -type f -exec ${REINPLACE_CMD} -e 's;#!/bin/bash;#!/bin/sh;g' \{\} \;
 	@${FIND} ${WRKSRC} -name \*.orig -delete
 	@${FIND} ${WRKSRC} -name \*.bak -delete