diff --git a/aider/coders/wholefile_coder.py b/aider/coders/wholefile_coder.py
index 840e8832413..d99e05dab25 100644
--- a/aider/coders/wholefile_coder.py
+++ b/aider/coders/wholefile_coder.py
@@ -38,14 +38,16 @@ def render_incremental_response(self, final):
     def update_files(self, mode="update"):
         content = self.partial_response_content
 
-        edited = set()
         chat_files = self.get_inchat_relative_files()
 
         output = []
         lines = content.splitlines(keepends=True)
 
+        edits = []
+
         saw_fname = None
         fname = None
+        fname_source = None
         new_lines = []
         for i, line in enumerate(lines):
             if line.startswith(self.fence[0]) or line.startswith(self.fence[1]):
@@ -57,17 +59,17 @@ def update_files(self, mode="update"):
 
                     if mode == "diff":
                         output += self.do_live_diff(full_path, new_lines, True)
-                    elif self.allowed_to_edit(fname):
-                        edited.add(fname)
-                        new_lines = "".join(new_lines)
-                        self.io.write_text(full_path, new_lines)
+                    else:
+                        edits.append((fname, fname_source, new_lines))
 
                     fname = None
+                    fname_source = None
                     new_lines = []
                     continue
 
                 # fname==None ... starting a new block
                 if i > 0:
+                    fname_source = "block"
                     fname = lines[i - 1].strip()
                     # Did gpt prepend a bogus dir? It especially likes to
                     # include the path/to prefix from the one-shot example in
@@ -77,8 +79,10 @@ def update_files(self, mode="update"):
                 if not fname:  # blank line? or ``` was on first line i==0
                     if saw_fname:
                         fname = saw_fname
+                        fname_source = "saw"
                     elif len(chat_files) == 1:
                         fname = chat_files[0]
+                        fname_source = "chat"
                     else:
                         # TODO: sense which file it is by diff size
                         raise ValueError(
@@ -105,11 +109,22 @@ def update_files(self, mode="update"):
             return "\n".join(output)
 
         if fname:
-            full_path = self.allowed_to_edit(fname)
-            if full_path:
-                edited.add(fname)
+            edits.append((fname, fname_source, new_lines))
+
+        edited = set()
+        # process from most reliable filename, to least reliable
+        for source in ("block", "saw", "chat"):
+            for fname, fname_source, new_lines in edits:
+                if fname_source != source:
+                    continue
+                # if a higher priority source already edited the file, skip
+                if fname in edited:
+                    continue
+
+                # we have a winner
                 new_lines = "".join(new_lines)
-                self.io.write_text(full_path, new_lines)
+                if self.allowed_to_edit(fname, new_lines):
+                    edited.add(fname)
 
         return edited
 
diff --git a/tests/test_wholefile.py b/tests/test_wholefile.py
index 83744c88508..d6ff75b4713 100644
--- a/tests/test_wholefile.py
+++ b/tests/test_wholefile.py
@@ -250,6 +250,38 @@ def test_update_files_earlier_filename(self):
         self.assertEqual(fname_a.read_text(), "after a\n")
         self.assertEqual(fname_b.read_text(), "after b\n")
 
+    def test_update_named_file_but_extra_unnamed_code_block(self):
+        sample_file = "hello.py"
+        new_content = "new\ncontent\ngoes\nhere\n"
+
+        with open(sample_file, "w") as f:
+            f.write("Original content\n")
+
+        # Initialize WholeFileCoder with the temporary directory
+        io = InputOutput(yes=True)
+        coder = WholeFileCoder(main_model=models.GPT35, io=io, fnames=[sample_file])
+
+        # Set the partial response content with the updated content
+        coder.partial_response_content = (
+            f"Here's the modified `{sample_file}` file that implements the `accumulate`"
+            f" function as per the given instructions:\n\n```\n{new_content}```\n\nThis"
+            " implementation uses a list comprehension to apply the `operation` function to"
+            " each element of the `collection` and returns the resulting list.\n"
+            "Run it like this:\n\n"
+            "```\npython {sample_file}\n```\n\n"
+        )
+
+        # Call update_files method
+        edited_files = coder.update_files()
+
+        # Check if the sample file was updated
+        self.assertIn(sample_file, edited_files)
+
+        # Check if the content of the sample file was updated
+        with open(sample_file, "r") as f:
+            updated_content = f.read()
+        self.assertEqual(updated_content, new_content)
+
     def test_full_edit(self):
         # Create a few temporary files
         _, file1 = tempfile.mkstemp()