diff --git a/mjit.c b/mjit.c
index 4fa9c82468..ebe7f9e767 100644
--- a/mjit.c
+++ b/mjit.c
@@ -307,8 +307,12 @@ mjit_add_iseq_to_process(const rb_iseq_t *iseq, const struct rb_mjit_compile_inf
 
     iseq->body->jit_func = (mjit_func_t)NOT_READY_JIT_ISEQ_FUNC;
     create_unit(iseq);
-    if (compile_info != NULL)
+    if (compile_info != NULL) {
         iseq->body->jit_unit->compile_info = *compile_info;
+    } else {
+        iseq->body->jit_unit->compile_info.disable_ivar_cache = false;
+        iseq->body->jit_unit->compile_info.disable_send_cache = false;
+    }
     if (iseq->body->jit_unit == NULL)
         // Failure in creating the unit.
         return;