diff --git a/src/switch_ivr_originate.c b/src/switch_ivr_originate.c
index 06f71cae5d..6c15d6f01c 100644
--- a/src/switch_ivr_originate.c
+++ b/src/switch_ivr_originate.c
@@ -1082,7 +1082,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_originate(switch_core_session_t *sess
 				switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "variable string %d = [%s]\n", x, var_array[x]);
 				if ((inner_var_count =
 					 switch_separate_string(var_array[x], '=', inner_var_array, (sizeof(inner_var_array) / sizeof(inner_var_array[0])))) == 2) {
-
+					switch_event_del_header(var_event, inner_var_array[0]);
 					switch_event_add_header_string(var_event, SWITCH_STACK_BOTTOM, inner_var_array[0], inner_var_array[1]);
 				}
 			}