diff --git a/source/ubl-settings-usergroups.c b/source/ubl-settings-usergroups.c
index 9047e13..c09b947 100644
--- a/source/ubl-settings-usergroups.c
+++ b/source/ubl-settings-usergroups.c
@@ -148,7 +148,7 @@ void yon_interface_update(main_window *widgets){
 				if (parameters_size>2&&!strcmp(parameters[2],"x")){
 					parameters[2]="";
 				}
-				if (!strcmp(parameters[1],"x")) parameters[1]="";
+				if (parameters_size>1&&!strcmp(parameters[1],"x")) parameters[1]="";
 				char *pars="";
 				if (parameters_size>4&&strcmp(parameters[4],"x")&&strcmp(parameters[4],"")){