diff --git a/HubConnectionOptions.go b/HubConnectionOptions.go
index f24e668..0cee9bd 100644
--- a/HubConnectionOptions.go
+++ b/HubConnectionOptions.go
@@ -17,6 +17,12 @@ type HubConnectionOptions struct {
 func (this *HubConnectionOptions) prepareConnection() *HubConnection {
 	if this.Self.ClientTag == "" {
 		this.Self.ClientTag = DEFAULT_CLIENT_TAG
+		this.Self.ClientVersion = DEFAULT_CLIENT_VERSION
+	}
+
+	// Shouldn't be blank either
+	if this.Self.ClientVersion == "" {
+		this.Self.ClientVersion = "0"
 	}
 
 	hc := HubConnection{
diff --git a/libnmdc.go b/libnmdc.go
index ee75c58..48709a2 100644
--- a/libnmdc.go
+++ b/libnmdc.go
@@ -9,10 +9,11 @@ import (
 )
 
 const (
-	DEFAULT_CLIENT_TAG   string        = "libnmdc.go"
-	DEFAULT_HUB_NAME     string        = "(unknown)"
-	SEND_KEEPALIVE_EVERY time.Duration = 29 * time.Second
-	AUTO_RECONNECT_AFTER time.Duration = 30 * time.Second
+	DEFAULT_CLIENT_TAG     string        = "libnmdc.go"
+	DEFAULT_CLIENT_VERSION string        = "0.11"
+	DEFAULT_HUB_NAME       string        = "(unknown)"
+	SEND_KEEPALIVE_EVERY   time.Duration = 29 * time.Second
+	AUTO_RECONNECT_AFTER   time.Duration = 30 * time.Second
 )
 
 var rx_protocolMessage *regexp.Regexp