diff --git a/package/utils/zyxel-bootconfig/files/95_apply_bootconfig b/package/utils/zyxel-bootconfig/files/95_apply_bootconfig
index c98bc8fbe24..b109b3c95cc 100644
--- a/package/utils/zyxel-bootconfig/files/95_apply_bootconfig
+++ b/package/utils/zyxel-bootconfig/files/95_apply_bootconfig
@@ -5,7 +5,7 @@ apply_bootconfig() {
 	zyxel,nwa50ax|\
 	zyxel,nwa50ax-pro|\
 	zyxel,nwa55axe)
-	        mtd_idx=$(find_mtd_index "bootconfig")
+		mtd_idx=$(find_mtd_index "bootconfig")
 		zyxel-bootconfig "/dev/mtd$mtd_idx" set-image-status 0 valid
 		zyxel-bootconfig "/dev/mtd$mtd_idx" set-active-image 0
 		;;