diff --git a/src/mdbx.c b/src/mdbx.c
index 96a236dd..80091c44 100644
--- a/src/mdbx.c
+++ b/src/mdbx.c
@@ -2375,7 +2375,7 @@ static int mdbx_page_alloc(MDBX_cursor *mc, unsigned num, MDBX_page **mp,
       /* Append PNL from FreeDB record to me_reclaimed_pglist */
       mdbx_cassert(mc, (mc->mc_flags & C_GCFREEZE) == 0);
       pgno_t *re_pnl = (pgno_t *)data.iov_base;
-      mdbx_tassert(txn, data.iov_len == MDBX_PNL_SIZEOF(re_pnl));
+      mdbx_tassert(txn, data.iov_len >= MDBX_PNL_SIZEOF(re_pnl));
       mdbx_tassert(txn, mdbx_pnl_check(re_pnl, false));
       repg_pos = MDBX_PNL_SIZE(re_pnl);
       if (!repg_list) {
diff --git a/src/tools/mdbx_chk.c b/src/tools/mdbx_chk.c
index e11305f8..e3ffe3ac 100644
--- a/src/tools/mdbx_chk.c
+++ b/src/tools/mdbx_chk.c
@@ -420,7 +420,8 @@ static int handle_freedb(const uint64_t record_number, const MDBX_val *key,
                   "%" PRIuSIZE " > %" PRIuSIZE " (corruption)",
                   (number + 1) * sizeof(pgno_t), data->iov_len);
       number = data->iov_len / sizeof(pgno_t) - 1;
-    } else if ((number + 1) * sizeof(pgno_t) < data->iov_len)
+    } else if (data->iov_len - (number + 1) * sizeof(pgno_t) >
+               sizeof(pgno_t) * 2)
       problem_add("entry", record_number, "extra idl space",
                   "%" PRIuSIZE " < %" PRIuSIZE " (minor, not a trouble)",
                   (number + 1) * sizeof(pgno_t), data->iov_len);