diff --git a/python/google/protobuf/descriptor_database.py b/python/google/protobuf/descriptor_database.py
index ce57e8f5a8..ce0033efed 100644
--- a/python/google/protobuf/descriptor_database.py
+++ b/python/google/protobuf/descriptor_database.py
@@ -120,14 +120,7 @@ class DescriptorDatabase(object):
     Raises:
       KeyError if no file contains the specified symbol.
     """
-    if symbol.count('.') == 1 and symbol[0] == '.':
-      symbol = symbol.lstrip('.')
-      warnings.warn(
-          'Please remove the leading "." when '
-          'FindFileContainingSymbol, this will turn to error '
-          'in 2026 Jan.',
-          RuntimeWarning,
-      )
+    symbol = symbol.lstrip('.')
     try:
       return self._file_desc_protos_by_symbol[symbol]
     except KeyError:
diff --git a/python/google/protobuf/internal/descriptor_database_test.py b/python/google/protobuf/internal/descriptor_database_test.py
index 0c99ba2669..696bdfb52f 100644
--- a/python/google/protobuf/internal/descriptor_database_test.py
+++ b/python/google/protobuf/internal/descriptor_database_test.py
@@ -95,6 +95,12 @@ class DescriptorDatabaseTest(unittest.TestCase):
             'google.protobuf.python.internal.FACTORY_2_VALUE_0'
         ),
     )
+    self.assertEqual(
+        file_desc_proto,
+        db.FindFileContainingSymbol(
+            '.google.protobuf.python.internal.FACTORY_2_VALUE_0'
+        ),
+    )
     self.assertEqual(
         file_desc_proto2, db.FindFileContainingSymbol('NO_PACKAGE_VALUE_0')
     )
@@ -150,11 +156,6 @@ class DescriptorDatabaseTest(unittest.TestCase):
     with self.assertRaisesRegex(KeyError, r'\'proto2_unittest\.NoneMessage\''):
       db.FindFileContainingSymbol('proto2_unittest.NoneMessage')
 
-    with self.assertRaises(KeyError):
-      db.FindFileContainingSymbol(
-          '.google.protobuf.python.internal.FACTORY_2_VALUE_0'
-      )
-
   def testConflictRegister(self):
     db = descriptor_database.DescriptorDatabase()
     unittest_fd = descriptor_pb2.FileDescriptorProto.FromString(