diff --git a/src/cryptonote_core/cryptonote_basic.h b/src/cryptonote_core/cryptonote_basic.h
index 41b3a9e..2020198 100644
--- a/src/cryptonote_core/cryptonote_basic.h
+++ b/src/cryptonote_core/cryptonote_basic.h
@@ -484,12 +484,12 @@ namespace cryptonote
     BEGIN_SERIALIZE()
       VARINT_FIELD(major_version)
       VARINT_FIELD(minor_version)
-      if (BLOCK_MAJOR_VERSION_1 == major_version)
+      if (BLOCK_MAJOR_VERSION_2 != major_version && BLOCK_MAJOR_VERSION_3 != major_version)
       {
         VARINT_FIELD(timestamp)
       }
       FIELD(prev_id)
-      if (BLOCK_MAJOR_VERSION_1 == major_version)
+      if (BLOCK_MAJOR_VERSION_2 != major_version && BLOCK_MAJOR_VERSION_3 != major_version)
       {
         FIELD(nonce)
       }