diff --git a/drivers/staging/rtl8188eu/include/drv_types.h b/drivers/staging/rtl8188eu/include/drv_types.h
index 7586de71dcdc..f7db55342d30 100644
--- a/drivers/staging/rtl8188eu/include/drv_types.h
+++ b/drivers/staging/rtl8188eu/include/drv_types.h
@@ -193,12 +193,6 @@ enum _IFACE_TYPE {
 	MAX_IFACE_PORT,
 };
 
-enum _ADAPTER_TYPE {
-	PRIMARY_ADAPTER,
-	SECONDARY_ADAPTER,
-	MAX_ADAPTER,
-};
-
 enum driver_state {
 	DRIVER_NORMAL = 0,
 	DRIVER_DISAPPEAR = 1,