diff --git a/server/src/uds/transports/HTML5RDP/HTML5RDP.py b/server/src/uds/transports/HTML5RDP/HTML5RDP.py
index e6a0a97e..0715f3a3 100644
--- a/server/src/uds/transports/HTML5RDP/HTML5RDP.py
+++ b/server/src/uds/transports/HTML5RDP/HTML5RDP.py
@@ -77,6 +77,7 @@ class HTML5RDPTransport(Transport):
     def initialize(self, values):
         if values is None:
             return
+        self.guacamoleServer.value = self.guacamoleServer.value.strip()
         if self.guacamoleServer.value[0:4] != 'http':
             raise Transport.ValidationException(_('The server must be http or https'))