diff --git a/fhem/FHEM/12_HProtocolGateway.pm b/fhem/FHEM/12_HProtocolGateway.pm
index 99541c486..27ee010d2 100644
--- a/fhem/FHEM/12_HProtocolGateway.pm
+++ b/fhem/FHEM/12_HProtocolGateway.pm
@@ -48,7 +48,7 @@ sub HProtocolGateway_Initialize($) {
                       "baudrate:300,600,1200,2400,4800,9600 " .
                       "parityBit:N,E,O " .
                       "databitsLength:5,6,7,8 " .
-                      "stopBit:0,1" .
+                      "stopBit:0,1 " .
                       "pollIntervalMins " .
                       "path";
 }