diff --git a/src/api-cursor.c b/src/api-cursor.c
index ec87e4bd..cfe935f1 100644
--- a/src/api-cursor.c
+++ b/src/api-cursor.c
@@ -12,8 +12,7 @@ MDBX_cursor *mdbx_cursor_create(void *context) {
   couple->outer.signature = cur_signature_ready4dispose;
   couple->outer.next = &couple->outer;
   couple->userctx = context;
-  couple->outer.top_and_flags = z_poor_mark;
-  couple->inner.cursor.top_and_flags = z_poor_mark | z_inner;
+  cursor_reset(couple);
   VALGRIND_MAKE_MEM_DEFINED(&couple->outer.backup, sizeof(couple->outer.backup));
   VALGRIND_MAKE_MEM_DEFINED(&couple->outer.tree, sizeof(couple->outer.tree));
   VALGRIND_MAKE_MEM_DEFINED(&couple->outer.clc, sizeof(couple->outer.clc));
@@ -31,13 +30,15 @@ int mdbx_cursor_reset(MDBX_cursor *mc) {
   if (unlikely(!mc))
     return LOG_IFERR(MDBX_EINVAL);
 
-  if (unlikely(mc->signature != cur_signature_ready4dispose && mc->signature != cur_signature_live))
-    return LOG_IFERR(MDBX_EBADSIGN);
+  if (likely(mc->signature == cur_signature_live)) {
+    cursor_reset((cursor_couple_t *)mc);
+    return MDBX_SUCCESS;
+  }
 
-  cursor_couple_t *couple = (cursor_couple_t *)mc;
-  couple->outer.top_and_flags = z_poor_mark;
-  couple->inner.cursor.top_and_flags = z_poor_mark | z_inner;
-  return MDBX_SUCCESS;
+  if (likely(mc->signature == cur_signature_ready4dispose))
+    return MDBX_SUCCESS;
+
+  return LOG_IFERR(MDBX_EBADSIGN);
 }
 
 int mdbx_cursor_bind(MDBX_txn *txn, MDBX_cursor *mc, MDBX_dbi dbi) {
@@ -112,7 +113,7 @@ int mdbx_cursor_unbind(MDBX_cursor *mc) {
     }
     mc->next = mc;
   }
-  be_poor(mc);
+  cursor_drown((cursor_couple_t *)mc);
   mc->signature = cur_signature_ready4dispose;
   return MDBX_SUCCESS;
 }
@@ -221,10 +222,9 @@ int mdbx_txn_release_all_cursors_ex(const MDBX_txn *txn, bool unbind, size_t *co
       ENSURE(nullptr, mc->signature == cur_signature_live && (mc->next != mc) && !mc->backup);
       txn->cursors[i] = mc->next;
       mc->next = mc;
-      if (unbind) {
-        be_poor(mc);
-        mc->signature = cur_signature_ready4dispose;
-      } else {
+      mc->signature = cur_signature_ready4dispose;
+      cursor_drown((cursor_couple_t *)mc);
+      if (!unbind) {
         mc->signature = 0;
         osal_free(mc);
       }
diff --git a/src/cursor.c b/src/cursor.c
index bf12cd66..73da6a8b 100644
--- a/src/cursor.c
+++ b/src/cursor.c
@@ -218,7 +218,6 @@ int cursor_shadow(MDBX_cursor *mc, MDBX_txn *nested, const size_t dbi) {
 
 MDBX_cursor *cursor_eot(MDBX_cursor *mc, MDBX_txn *txn, const bool merge) {
   MDBX_cursor *const next = mc->next;
-  mc->next = mc;
   const unsigned stage = mc->signature;
   MDBX_cursor *const bk = mc->backup;
   ENSURE(txn->env, stage == cur_signature_live || (stage == cur_signature_wait4eot && bk));
@@ -253,6 +252,8 @@ MDBX_cursor *cursor_eot(MDBX_cursor *mc, MDBX_txn *txn, const bool merge) {
     osal_free(bk);
   } else {
     ENSURE(mc->txn->env, stage == cur_signature_live);
+    cursor_drown((cursor_couple_t *)mc);
+    mc->next = mc;
     mc->signature = cur_signature_ready4dispose /* Cursor may be reused */;
   }
   return next;
diff --git a/src/cursor.h b/src/cursor.h
index cfaca52e..d06bad3a 100644
--- a/src/cursor.h
+++ b/src/cursor.h
@@ -355,3 +355,19 @@ MDBX_MAYBE_UNUSED static inline void cursor_inner_refresh(const MDBX_cursor *mc,
 }
 
 MDBX_MAYBE_UNUSED MDBX_INTERNAL bool cursor_is_tracked(const MDBX_cursor *mc);
+
+static inline void cursor_reset(cursor_couple_t *couple) {
+  couple->outer.top_and_flags = z_fresh_mark;
+  couple->inner.cursor.top_and_flags = z_fresh_mark | z_inner;
+}
+
+static inline void cursor_drown(cursor_couple_t *couple) {
+  couple->outer.top_and_flags = z_poor_mark;
+  couple->inner.cursor.top_and_flags = z_poor_mark | z_inner;
+  couple->outer.txn = nullptr;
+  couple->inner.cursor.txn = nullptr;
+  couple->outer.tree = nullptr;
+  /* сохраняем clc-указатель, так он используется для вычисления dbi в mdbx_cursor_renew(). */
+  couple->outer.dbi_state = nullptr;
+  couple->inner.cursor.dbi_state = nullptr;
+}