diff --git a/Example/StompClientLib.swift b/Example/StompClientLib.swift
index 591787a..20a9176 100755
--- a/Example/StompClientLib.swift
+++ b/Example/StompClientLib.swift
@@ -134,7 +134,9 @@ public class StompClientLib: NSObject, SRWebSocketDelegate {
     private func connect() {
         if socket?.readyState == .OPEN {
             // Support for Spring Boot 2.1.x
-            connectionHeaders = [StompCommands.commandHeaderAcceptVersion:"1.1,1.2"]
+            if (connectionHeaders == nil) {
+                connectionHeaders = [StompCommands.commandHeaderAcceptVersion:"1.1,1.2"]
+            }
             // at the moment only anonymous logins
             self.sendFrame(command: StompCommands.commandConnect, header: connectionHeaders, body: nil)
         } else {
diff --git a/StompClientLib/Classes/StompClientLib.swift b/StompClientLib/Classes/StompClientLib.swift
index a25e16f..9ee281f 100755
--- a/StompClientLib/Classes/StompClientLib.swift
+++ b/StompClientLib/Classes/StompClientLib.swift
@@ -134,7 +134,9 @@ public class StompClientLib: NSObject, SRWebSocketDelegate {
     private func connect() {
         if socket?.readyState == .OPEN {
             // Support for Spring Boot 2.1.x
-            connectionHeaders = [StompCommands.commandHeaderAcceptVersion:"1.1,1.2"]
+            if (connectionHeaders == nil) {
+            	connectionHeaders = [StompCommands.commandHeaderAcceptVersion:"1.1,1.2"]
+            }
             // at the moment only anonymous logins
             self.sendFrame(command: StompCommands.commandConnect, header: connectionHeaders, body: nil)
         } else {