diff --git a/include/qemu/uuid.h b/include/qemu/uuid.h
index 9e160d65aa..008926ab32 100644
--- a/include/qemu/uuid.h
+++ b/include/qemu/uuid.h
@@ -78,8 +78,7 @@ typedef struct {
                  "%02hhx%02hhx-" \
                  "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
 
-#define UUID_FMT_LEN 36
-#define UUID_STR_LEN (UUID_FMT_LEN + 1)
+#define UUID_STR_LEN (36 + 1)
 
 #define UUID_NONE "00000000-0000-0000-0000-000000000000"