diff --git a/plugins/ccgx/fu-ccgx-dmc-device.c b/plugins/ccgx/fu-ccgx-dmc-device.c
index c05a39027..46963b688 100644
--- a/plugins/ccgx/fu-ccgx-dmc-device.c
+++ b/plugins/ccgx/fu-ccgx-dmc-device.c
@@ -648,7 +648,7 @@ fu_ccgx_dmc_device_init (FuCcgxDmcDevice *self)
 {
 	self->ep_intr_in = DMC_INTERRUPT_PIPE_ID;
 	self->ep_bulk_out = DMC_BULK_PIPE_ID;
-	fu_device_set_protocol (FU_DEVICE (self), "com.cypress.ccgx");
+	fu_device_set_protocol (FU_DEVICE (self), "com.cypress.ccgx.dmc");
 	fu_device_set_version_format (FU_DEVICE (self), FWUPD_VERSION_FORMAT_QUAD);
 	fu_device_add_flag (FU_DEVICE (self), FWUPD_DEVICE_FLAG_REQUIRE_AC);
 	fu_device_add_flag (FU_DEVICE (self), FWUPD_DEVICE_FLAG_DUAL_IMAGE);