diff --git a/crypto/vm/vm.cpp b/crypto/vm/vm.cpp
index fb2f4d1e..6668c6d5 100644
--- a/crypto/vm/vm.cpp
+++ b/crypto/vm/vm.cpp
@@ -503,7 +503,7 @@ int VmState::run() {
 
 bool VmState::try_commit() {
   if (cr.d[0].not_null() && cr.d[1].not_null() && cr.d[0]->get_depth() <= max_data_depth &&
-      cr.d[1]->get_depth() <= max_data_depth) {
+      cr.d[1]->get_depth() <= max_data_depth && cr.d[0]->get_level() == 0 && cr.d[1]->get_level() == 0) {
     cstate.c4 = cr.d[0];
     cstate.c5 = cr.d[1];
     cstate.committed = true;