diff --git a/src/bits.h b/src/bits.h
index ad335b6b..8e8fc8de 100644
--- a/src/bits.h
+++ b/src/bits.h
@@ -1212,7 +1212,7 @@ static __inline pgno_t pgno_sub(pgno_t base, pgno_t subtrahend) {
 }
 
 static __inline void mdbx_jitter4testing(bool tiny) {
-#ifndef NDEBUG
+#if MDBX_DEBUG
   if (MDBX_DBG_JITTER & mdbx_runtime_flags)
     mdbx_osal_jitter(tiny);
 #else
diff --git a/src/mdbx.c b/src/mdbx.c
index 21a8d9b7..8e9db560 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -11639,6 +11639,7 @@ static int __cold mdbx_env_copy_asis(MDBX_env *env, MDBX_txn *read_txn,
     return rc;
   }
 
+  mdbx_jitter4testing(false);
   const size_t meta_bytes = pgno2bytes(env, NUM_METAS);
   /* Make a snapshot of meta-pages,
    * but writing ones after the data was flushed */
@@ -11654,6 +11655,7 @@ static int __cold mdbx_env_copy_asis(MDBX_env *env, MDBX_txn *read_txn,
 
   /* Copy the data */
   const size_t data_bytes = pgno2bytes(env, read_txn->mt_next_pgno);
+  mdbx_jitter4testing(false);
 #if __GLIBC_PREREQ(2, 27)
   for (off_t in_offset = meta_bytes; in_offset < (off_t)data_bytes;) {
     off_t out_offset = in_offset;
diff --git a/test/test.cc b/test/test.cc
index 05b68d67..e9e925e9 100644
--- a/test/test.cc
+++ b/test/test.cc
@@ -139,6 +139,8 @@ void testcase::db_open() {
 
   if (!db_guard)
     db_prepare();
+
+  jitter_delay(true);
   int rc = mdbx_env_open(db_guard.get(), config.params.pathname_db.c_str(),
                          (unsigned)config.params.mode_flags, 0640);
   if (unlikely(rc != MDBX_SUCCESS))
@@ -569,22 +571,27 @@ bool test_execute(const actor_config &config_const) {
       if (!test->setup()) {
         log_notice("test setup failed");
         return false;
-      } else if (!test->run()) {
+      }
+      if (!test->run()) {
         log_notice("test failed");
         return false;
-      } else if (!test->teardown()) {
+      }
+      if (!test->teardown()) {
         log_notice("test teardown failed");
         return false;
-      } else {
-        if (config.params.nrepeat == 1)
-          log_info("test successed");
-        else if (config.params.nrepeat)
+      }
+
+      if (config.params.nrepeat == 1)
+        log_info("test successed");
+      else {
+        if (config.params.nrepeat)
           log_info("test successed (iteration %zi of %zi)", iter,
                    size_t(config.params.nrepeat));
         else
           log_info("test successed (iteration %zi)", iter);
         config.params.keygen.seed += INT32_C(0xA4F4D37B);
       }
+
     } while (config.params.nrepeat == 0 || iter < config.params.nrepeat);
     return true;
   } catch (const std::exception &pipets) {