diff --git a/src/anonimongo/core/bson.nim b/src/anonimongo/core/bson.nim
index e8b1a0c..7067173 100644
--- a/src/anonimongo/core/bson.nim
+++ b/src/anonimongo/core/bson.nim
@@ -1011,11 +1011,11 @@ proc decode*(strbytes: string): BsonDocument =
     encoded: true
   )
 
-proc newBson*(table: varargs[(string, BsonBase)]): BsonDocument =
+proc newBson*(first: (string, BsonBase), table: varargs[(string, BsonBase)]): BsonDocument =
   var tableres = newOrderedTable[string, BsonBase]()
   ## Overload newBson with table definition only and stream default to
   ## StringStream. In most case, use `bson macro<#bson.m,untyped>`_.
-  for t in table:
+  for t in @[first] & table.toSeq:
     tableres[t[0]] = t[1]
   BsonDocument(
     table: tableres,
@@ -1081,4 +1081,4 @@ converter ofTimestamp*(b: BsonBase): TimestampInternal =
   bsonFetcher(b, bkTimestamp, BsonTimestamp, TimestampInternal)
 
 template bson*(): untyped = bson({})
-  ## Convenience for empty bson.
\ No newline at end of file
+  ## Convenience for empty bson.
diff --git a/src/anonimongo/core/macroto_v2.nim b/src/anonimongo/core/macroto_v2.nim
index 20edf78..b5e64d0 100644
--- a/src/anonimongo/core/macroto_v2.nim
+++ b/src/anonimongo/core/macroto_v2.nim
@@ -575,6 +575,10 @@ proc assignObj(info: NodeInfo): NimNode =
       else: immediateParent
     bodyif.add quote do:
       var `resvar`: `parentSym`
+  elif targetSym.kind == nnkPostfix:
+    let target = targetSym[1]
+    bodyif.add quote do:
+      var `resvar`: `target`
   else:
     bodyif.add quote do:
       var `resvar`: `targetSym`
diff --git a/src/anonimongo/core/types.nim b/src/anonimongo/core/types.nim
index 62d20c0..745a26a 100644
--- a/src/anonimongo/core/types.nim
+++ b/src/anonimongo/core/types.nim
@@ -303,12 +303,11 @@ proc newMongo*[S: Multisock](muri: MongoUri, poolconn = poolconn, dnsserver = "8
   template raiseInvalidSep: untyped =
     raise newException(MongoError,
       &"Whether invalid URI {uri} or missing trailing '/'")
-    
+  type URLUri = uri.Uri
   let uri = muri.string
   if uri.count('/') < 3:
     raiseInvalidSep()
   let uriobj = parseUri uri
-  type URLUri = Uri
   var uris: seq[URLUri]
   if uriobj.scheme == "":
     raise newException(MongoError, &"No scheme protocol provided at \"{uri}\" uri")
@@ -328,7 +327,7 @@ proc newMongo*[S: Multisock](muri: MongoUri, poolconn = poolconn, dnsserver = "8
         raise newException(MongoError, errmsg)
       for i, ans in resp.answers:
         let srvrec = ans as SRVRecord
-        uris[i] = Uri(
+        uris[i] = URLUri(
           scheme: "mongodb",
           hostname: srvrec.target,
           port: $srvrec.port,
@@ -367,7 +366,7 @@ proc newMongo*[S: Multisock](muri: MongoUri, poolconn = poolconn, dnsserver = "8
     if hdom.len > 1:
       port = hdom[1]
     hostname = hdom[0]
-    uris[i] = Uri(
+    uris[i] = URLUri(
       scheme: scheme,
       hostname: hostname,
       port: port,
@@ -600,4 +599,4 @@ proc toCursor*[S: MultiSock](b: BsonDocument): Cursor[S] =
     firstBatch: if "firstBatch" in b: b["firstBatch"].ofArray.map(ofEmbedded) else: @[],
     nextBatch: if "nextBatch" in b: b["nextBatch"].ofArray.map(ofEmbedded) else: @[],
     ns: b["ns"],
-  )
\ No newline at end of file
+  )