diff --git a/Core/Src/commands.c b/Core/Src/commands.c
index 61f2a67..b420ab5 100644
--- a/Core/Src/commands.c
+++ b/Core/Src/commands.c
@@ -134,6 +134,7 @@ int do_devid(char *args) {
 	    uint32_t myint[2];
 	    char    mychar[8];
 	} my;
+	//char lot[sizeof(my) + 1];
 
 	printf("DEVID: 0x%08lx\n", HAL_GetDEVID());
 	printf("REVID: 0x%08lx\n", HAL_GetREVID());
@@ -141,9 +142,10 @@ int do_devid(char *args) {
 
 	my.myint[1] = HAL_GetUIDw2();
 	my.myint[0] = HAL_GetUIDw1();
-	my.mychar[8] = '\0';
+	//memcpy(lot, my.mychar, sizeof(my.mychar));
+	//lot[sizeof(my)] = '\0';
 
-	printf("=> Lot Number: %s\n", my.mychar);
+	printf("=> Lot Number: %.8s\n", my.mychar);
 	printf("=> Wafer Number: %u\n", (uint8_t)(HAL_GetUIDw1() & 0xff));
 	return 0;
 }