diff --git a/Libraries/Cordio/platform/targets/maxim/build/cordio_lib.mk b/Libraries/Cordio/platform/targets/maxim/build/cordio_lib.mk
index 5343a51519..510c6dc7cb 100644
--- a/Libraries/Cordio/platform/targets/maxim/build/cordio_lib.mk
+++ b/Libraries/Cordio/platform/targets/maxim/build/cordio_lib.mk
@@ -92,8 +92,7 @@ ${CORDIO_BUILD_DIR}/${CORDIO_LIB}: ${CORDIO_C_FILES} ${PROJECTMK}
 	$(MAKE) -f ${CORDIO_DIR}/platform/targets/maxim/build/libCordio.mk lib MAXIM_PATH=${MAXIM_PATH} PROJECT=${CORDIO_LIB} \
 	CORDIO_LIB_VAR=${CORDIO_LIB_VAR} BUILD_DIR=${CORDIO_BUILD_DIR} MFLOAT_ABI=$(MFLOAT_ABI) \
 	DUAL_CORE=$(DUAL_CORE) RISCV_CORE=$(RISCV_CORE) TRACE=${TRACE} DEBUG=${DEBUG} RTOS=${RTOS} \
-	CFG_DEV="${CFG_DEV}" PROJECTMK=${PROJECTMK} BOARD=${BOARD} MXC_OPTIMIZE_CFLAGS=${CORDIO_OPTIMIZE_CFLAGS} \
-	BT_VER=${BT_VER}
+	CFG_DEV="${CFG_DEV}" PROJECTMK=${PROJECTMK} BOARD=${BOARD} MXC_OPTIMIZE_CFLAGS=${CORDIO_OPTIMIZE_CFLAGS}
     
 
 clean.cordio: