diff --git a/drivers/mmc/ftsdc010_esdhc.c b/drivers/mmc/ftsdc010_esdhc.c
index f1702fe..42f0e0c 100644
--- a/drivers/mmc/ftsdc010_esdhc.c
+++ b/drivers/mmc/ftsdc010_esdhc.c
@@ -666,6 +666,7 @@
 	mmc->set_ios = ftsdc010_set_ios;
 	mmc->init = ftsdc010_core_init;
 	mmc->getcd = NULL;
+	mmc->getwp = NULL;
 
 	mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;