1 files changed, 2 insertions, 2 deletions
diff --git a/migration/multifd-zstd.c b/migration/multifd-zstd.c
index cc4e991724..97c08367d0 100644
--- a/migration/multifd-zstd.c
+++ b/migration/multifd-zstd.c
@@ -67,8 +67,8 @@ static int zstd_send_setup(MultiFDSendParams *p, Error **errp)
                    p->id, ZSTD_getErrorName(res));
         return -1;
     }
-    /* To be safe, we reserve twice the size of the packet */
-    z->zbuff_len = MULTIFD_PACKET_SIZE * 2;
+    /* This is the maxium size of the compressed buffer */
+    z->zbuff_len = ZSTD_compressBound(MULTIFD_PACKET_SIZE);
     z->zbuff = g_try_malloc(z->zbuff_len);
     if (!z->zbuff) {
         ZSTD_freeCStream(z->zcs);