diff --git a/inst/include/rxode2parse_control.h b/inst/include/rxode2parse_control.h
index 5463ad23..5acfe111 100644
--- a/inst/include/rxode2parse_control.h
+++ b/inst/include/rxode2parse_control.h
@@ -95,7 +95,8 @@
 #define Rxc_addlDropSs 91
 #define Rxc_ssAtDoseTime 92
 #define Rxc_ss2cancelAllPending 93
-#define Rxc__zeros 94
+#define Rxc_envir 94
+#define Rxc__zeros 95
 #define RxMv_params 0
 #define RxMv_lhs 1
 #define RxMv_state 2