diff --git a/node.go b/node.go
index 7ef758e..e80e3bc 100644
--- a/node.go
+++ b/node.go
@@ -293,7 +293,7 @@ func nodeLoop(ctx *Context, node *Node) error {
       }
       validated := ed25519.Verify(msg.Source, sig_data, msg.Signature)
       if validated == false {
-        ctx.Log.Logf("signal", "SIGNAL_VERIFY_ERR: %s - %s", node.ID, reflect.TypeOf(msg.Signal))
+        ctx.Log.Logf("signal_verify", "SIGNAL_VERIFY_ERR: %s - %s", node.ID, reflect.TypeOf(msg.Signal))
         continue
       }
 
diff --git a/serialize.go b/serialize.go
index 68cdecc..8bd598e 100644
--- a/serialize.go
+++ b/serialize.go
@@ -9,6 +9,7 @@ import (
   "math"
   "reflect"
   "sort"
+  "bytes"
 )
 
 const (
@@ -826,7 +827,7 @@ func SerializeMap(ctx *Context, value reflect.Value) (Chunks, error) {
     return NewChunks([]byte{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}), nil
   }
 
-  map_chunks := Chunks{}
+  map_chunks := []Chunks{}
   map_size := uint64(0)
   map_iter := value.MapRange()
   for map_iter.Next() {
@@ -838,19 +839,30 @@ func SerializeMap(ctx *Context, value reflect.Value) (Chunks, error) {
     if err != nil {
       return Chunks{}, err
     }
-    map_chunks = map_chunks.AddChunksToEnd(key_chunks)
 
     val_chunks, err := SerializeValue(ctx, val)
     if err != nil {
       return Chunks{}, err
     }
-    map_chunks = map_chunks.AddChunksToEnd(val_chunks)
+
+    chunks := key_chunks.AddChunksToEnd(val_chunks)
+    map_chunks = append(map_chunks, chunks)
   }
 
+  // Sort map_chunks
+  sort.Slice(map_chunks, func(i, j int) bool {
+    return bytes.Compare(map_chunks[i].First.Data, map_chunks[j].First.Data) < 0
+  })
+  chunks := Chunks{}
+  for _, chunk := range(map_chunks) {
+    chunks = chunks.AddChunksToEnd(chunk)
+  }
+
+
   size_data := make([]byte, 8)
   binary.BigEndian.PutUint64(size_data, map_size)
 
-  return NewChunks(size_data).AddChunksToEnd(map_chunks), nil
+  return NewChunks(size_data).AddChunksToEnd(chunks), nil
 }
 
 func DeserializeMap(ctx *Context, reflect_type reflect.Type, data []byte) (reflect.Value, []byte, error) {