diff --git a/mmc_cmds.c b/mmc_cmds.c
index afa85b7..205e6e5 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -1392,6 +1392,7 @@ int do_read_extcsd(int nargs, char **argv)
 	__u32 regl;
 	int fd, ret;
 	char *device;
+	char lbuf[10];
 	const char *str;
 
 	if (nargs != 2) {
@@ -1833,8 +1834,9 @@ int do_read_extcsd(int nargs, char **argv)
 	}
 
 	if (ext_csd_rev >= 7) {
-		printf("eMMC Firmware Version: %s\n",
-			(char*)&ext_csd[EXT_CSD_FIRMWARE_VERSION]);
+                memset(lbuf, 0, sizeof(lbuf));
+		strncpy(lbuf, (char*)&ext_csd[EXT_CSD_FIRMWARE_VERSION], 8);
+		printf("eMMC Firmware Version: %s\n", lbuf);
 		printf("eMMC Life Time Estimation A [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]: 0x%02x\n",
 			ext_csd[EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_A]);
 		printf("eMMC Life Time Estimation B [EXT_CSD_DEVICE_LIFE_TIME_EST_TYP_B]: 0x%02x\n",