diff --git a/package/usb_modeswitch/usb_modeswitch.mk b/package/usb_modeswitch/usb_modeswitch.mk
index 8e6b433913..d0c33cc187 100644
--- a/package/usb_modeswitch/usb_modeswitch.mk
+++ b/package/usb_modeswitch/usb_modeswitch.mk
@@ -28,6 +28,7 @@ USB_MODESWITCH_POST_PATCH_HOOKS += UPDATE_CONFIG_HOOK
 
 define USB_MODESWITCH_BUILD_CMDS
 	$(TARGET_MAKE_ENV) $(MAKE) $(TARGET_CONFIGURE_OPTS) \
+		$(if $(BR2_INSTALL_LIBSTDCPP),,CXX=false) \
 		CFLAGS="$(TARGET_CFLAGS) -D_GNU_SOURCE -Wall -I." \
 		JIM_CONFIGURE_OPTS="--host=$(GNU_TARGET_NAME) --build=$(GNU_HOST_NAME)" \
 		-C $(@D) $(USB_MODESWITCH_BUILD_TARGETS)