diff --git a/CHANGELOG.md b/CHANGELOG.md
index 208d759..c1ce1d4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 Change log
 -----------
 
+* linux-mainline: Enable CONFIG_USB_SERIAL_OPTION necessary for modems functionality [Sebastian]
+
 # v2.14.0+rev2
 ## (2018-07-26)
 
diff --git a/layers/meta-resin-allwinner/recipes-kernel/linux/linux-mainline_%.bbappend b/layers/meta-resin-allwinner/recipes-kernel/linux/linux-mainline_%.bbappend
index b4d02d8..158cba4 100644
--- a/layers/meta-resin-allwinner/recipes-kernel/linux/linux-mainline_%.bbappend
+++ b/layers/meta-resin-allwinner/recipes-kernel/linux/linux-mainline_%.bbappend
@@ -39,6 +39,7 @@ RESIN_CONFIGS[hdmi] ="\
 
 RESIN_CONFIGS_append = " huawei_modems"
 RESIN_CONFIGS_DEPS[huawei_modems] = "\
+    CONFIG_USB_SERIAL_OPTION=m \
     CONFIG_USB_USBNET=m \
 "
 RESIN_CONFIGS[huawei_modems] ="\