diff --git a/sys/modules/usb/rsu/Makefile b/sys/modules/usb/rsu/Makefile
index 482071c21718..755f4b82a56d 100644
--- a/sys/modules/usb/rsu/Makefile
+++ b/sys/modules/usb/rsu/Makefile
@@ -5,6 +5,6 @@
 KMOD    = if_rsu
 SRCS    = if_rsu.c if_rsureg.h \
 	  bus_if.h device_if.h \
-	  opt_bus.h opt_usb.h usb_if.h usbdevs.h
+	  opt_bus.h opt_usb.h opt_wlan.h usb_if.h usbdevs.h
 
 .include <bsd.kmod.mk>
diff --git a/sys/modules/usb/urtwn/Makefile b/sys/modules/usb/urtwn/Makefile
index 58c409afa290..d96529494089 100644
--- a/sys/modules/usb/urtwn/Makefile
+++ b/sys/modules/usb/urtwn/Makefile
@@ -5,6 +5,6 @@
 KMOD    = if_urtwn
 SRCS    = if_urtwn.c if_urtwnreg.h \
 	  bus_if.h device_if.h \
-	  opt_bus.h opt_usb.h usb_if.h usbdevs.h
+	  opt_bus.h opt_usb.h opt_wlan.h usb_if.h usbdevs.h
 
 .include <bsd.kmod.mk>