diff --git a/hw/xwin/xlaunch/main.cc b/hw/xwin/xlaunch/main.cc
index 4450c07f3..2247d3aaf 100755
--- a/hw/xwin/xlaunch/main.cc
+++ b/hw/xwin/xlaunch/main.cc
@@ -532,6 +532,7 @@ class CMyWizard : public CWizard
 		    else
 			buffer += "-query ";
 		    buffer += config.xdmcp_host;
+            buffer += " ";
 		}
 	    }
             if (config.clipboard)