diff --git a/include/package-ipkg.mk b/include/package-ipkg.mk
index a92d6921214..32de3cc93ee 100644
--- a/include/package-ipkg.mk
+++ b/include/package-ipkg.mk
@@ -232,13 +232,13 @@ $(_endef)
 		( \
 			echo "#!/bin/sh"; \
 			echo "[ \"\$$$${IPKG_NO_SCRIPT}\" = \"1\" ] && exit 0"; \
-			echo "[ -x "\$$$${IPKG_INSTROOT}/lib/functions.sh" ] || exit 0"; \
+			echo "[ -s "\$$$${IPKG_INSTROOT}/lib/functions.sh" ] || exit 0"; \
 			echo ". \$$$${IPKG_INSTROOT}/lib/functions.sh"; \
 			echo "default_postinst \$$$$0 \$$$$@"; \
 		) > postinst; \
 		( \
 			echo "#!/bin/sh"; \
-			echo "[ -x "\$$$${IPKG_INSTROOT}/lib/functions.sh" ] || exit 0"; \
+			echo "[ -s "\$$$${IPKG_INSTROOT}/lib/functions.sh" ] || exit 0"; \
 			echo ". \$$$${IPKG_INSTROOT}/lib/functions.sh"; \
 			echo "default_prerm \$$$$0 \$$$$@"; \
 		) > prerm; \
diff --git a/package/base-files/files/lib/functions.sh b/package/base-files/files/lib/functions.sh
old mode 100755
new mode 100644
index 272e230db26..2bad45324f2
--- a/package/base-files/files/lib/functions.sh
+++ b/package/base-files/files/lib/functions.sh
@@ -1,4 +1,3 @@
-#!/bin/sh
 # Copyright (C) 2006-2014 OpenWrt.org
 # Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
 # Copyright (C) 2010 Vertical Communications