diff --git a/wlng/Makefile b/wlng/Makefile
index 6625e3f3c..a18cfe558 100644
--- a/wlng/Makefile
+++ b/wlng/Makefile
@@ -19,12 +19,12 @@ PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
 include $(INCLUDE_DIR)/package.mk
 
 ifeq ($(CONFIG_TARGET_iopsys_ramips_ex400),y)
-WLNG_TARGET:=-DIOPSYS_MEDIATEK
+WLNG_TARGET:=IOPSYS_MEDIATEK
 else ifeq ($(CONFIG_TARGET_iopsys_brcm63xx_mips),y)
-WLNG_TARGET:=-DIOPSYS_BROADCOM
+WLNG_TARGET:=IOPSYS_BROADCOM
 KERNEL_DIR:=$(BUILD_DIR)/bcmkernel/bcm963xx
 else ifeq ($(CONFIG_TARGET_iopsys_brcm63xx_arm),y)
-WLNG_TARGET:=-DIOPSYS_BROADCOM
+WLNG_TARGET:=IOPSYS_BROADCOM
 else
 $(info (UNEXPECTED CONFIG TARGET))
 endif