diff --git a/Fleece/Core/Doc.cc b/Fleece/Core/Doc.cc
index e007d743..3c8c7758 100644
--- a/Fleece/Core/Doc.cc
+++ b/Fleece/Core/Doc.cc
@@ -190,7 +190,7 @@ namespace fleece { namespace impl {
         if (!_unregistered.test_and_set()) {            // this is atomic
 #if DEBUG
             // Assert that the data hasn't been changed since I was created:
-            if (_data.size < 1e6 && _data.hash() != _dataHash)
+            if (!_dontValidate && _data.size < 1e6 && _data.hash() != _dataHash)
                 FleeceException::_throw(InternalError,
                     "Memory range (%p .. %p) was altered while Scope %p (sk=%p) was active. "
                     "This usually means the Scope's data was freed/invalidated before the Scope "
diff --git a/Fleece/Core/Doc.hh b/Fleece/Core/Doc.hh
index 4b705421..d407a88b 100644
--- a/Fleece/Core/Doc.hh
+++ b/Fleece/Core/Doc.hh
@@ -49,6 +49,13 @@ namespace fleece { namespace impl {
         slice data() const FLPURE                      {return _data;}
         alloc_slice allocedData() const FLPURE         {return _alloced;}
 
+        void dontValidate() {
+#if DEBUG
+            // c.f. FleeceCursor::resetScope where we ask to skip validation.
+            _dontValidate = true;
+#endif
+        }
+
         SharedKeys* sharedKeys() const FLPURE          {return _sk;}
         slice externDestination() const FLPURE         {return _externDestination;}
 
@@ -78,6 +85,7 @@ namespace fleece { namespace impl {
         std::atomic_flag    _unregistered ATOMIC_FLAG_INIT; // False if registered in sMemoryMap
 #if DEBUG
         uint32_t            _dataHash;                  // hash of _data, for troubleshooting
+        bool                _dontValidate{false};       // the check on the hash can be omitted
 #endif
     protected:
         bool                _isDoc {false};             // True if I am a field of a Doc