diff --git a/ps-grammar/gprs/gprs.jsgf b/ps-grammar/gprs/gprs.jsgf
index d7a1a00eb1bad2fcaa2bb227d296666d38e12a8f..b321673f904a22742282ca6cfab488e5fd106b97 100644
--- a/ps-grammar/gprs/gprs.jsgf
+++ b/ps-grammar/gprs/gprs.jsgf
@@ -1,6 +1,8 @@
 #JSGF V1.0;
 grammar ToBI_GPRS;
-public <task> = [tobi] [(would | could) you] [please] <command> [please] [tobi];
+public <task> = [<robot_name>] [(would | could) you] [please] <command> [please] [<robot_name>];
+
+<robot_name> = tobi | robot;
 
 <command> = <bring_command> | <goto_command> | <find_command> | <follow_command> | <cleanup_command> | <show_command> | <pointat_command>;