diff --git a/disk/part.c b/disk/part.c
index 91c6ac4..72241b7 100644
--- a/disk/part.c
+++ b/disk/part.c
@@ -370,9 +370,7 @@
 	if (blk_enabled()) {
 		/* The common case is no UUID support */
 		disk_partition_clr_uuid(info);
-#ifdef CONFIG_PARTITION_TYPE_GUID
-		info->type_guid[0] = 0;
-#endif
+		disk_partition_clr_type_guid(info);
 
 		if (part_type == PART_TYPE_UNKNOWN) {
 			drv = part_driver_lookup_type(desc);
@@ -415,9 +413,7 @@
 	strcpy((char *)info->type, BOOT_PART_TYPE);
 	strcpy((char *)info->name, "Whole Disk");
 	disk_partition_clr_uuid(info);
-#ifdef CONFIG_PARTITION_TYPE_GUID
-	info->type_guid[0] = 0;
-#endif
+	disk_partition_clr_type_guid(info);
 
 	return 0;
 }
diff --git a/disk/part_efi.c b/disk/part_efi.c
index a6f7375..2086752 100644
--- a/disk/part_efi.c
+++ b/disk/part_efi.c
@@ -294,10 +294,11 @@
 				(char *)disk_partition_uuid(info),
 				UUID_STR_FORMAT_GUID);
 	}
-#ifdef CONFIG_PARTITION_TYPE_GUID
-	uuid_bin_to_str(gpt_pte[part - 1].partition_type_guid.b,
-			info->type_guid, UUID_STR_FORMAT_GUID);
-#endif
+	if (IS_ENABLED(CONFIG_PARTITION_TYPE_GUID)) {
+		uuid_bin_to_str(gpt_pte[part - 1].partition_type_guid.b,
+				(char *)disk_partition_type_uuid(info),
+				UUID_STR_FORMAT_GUID);
+	}
 
 	log_debug("start 0x" LBAF ", size 0x" LBAF ", name %s\n", info->start,
 		  info->size, info->name);
diff --git a/include/part.h b/include/part.h
index 8e5e543..5cf1c5e 100644
--- a/include/part.h
+++ b/include/part.h
@@ -107,6 +107,34 @@
 #endif
 }
 
+/* Accessors for struct disk_partition field ->type_guid */
+extern char *__invalid_use_of_disk_partition_type_uuid;
+
+static inline const
+char *disk_partition_type_uuid(const struct disk_partition *info)
+{
+#ifdef CONFIG_PARTITION_TYPE_GUID
+	return info->type_guid;
+#else
+	return __invalid_use_of_disk_partition_type_uuid;
+#endif
+}
+
+static inline void disk_partition_set_type_guid(struct disk_partition *info,
+						const char *val)
+{
+#ifdef CONFIG_PARTITION_TYPE_GUID
+	strlcpy(info->type_guid, val, UUID_STR_LEN + 1);
+#endif
+}
+
+static inline void disk_partition_clr_type_guid(struct disk_partition *info)
+{
+#ifdef CONFIG_PARTITION_TYPE_GUID
+	*info->type_guid = '\0';
+#endif
+}
+
 struct disk_part {
 	int partnum;
 	struct disk_partition gpt_part_info;