diff --git a/aider/coder.py b/aider/coder.py
index 7dd8153e9..85e94f60a 100755
--- a/aider/coder.py
+++ b/aider/coder.py
@@ -344,10 +344,16 @@ class Coder:
         )
 
         mentioned_rel_fnames = set()
+        fname_to_rel_fnames = {}
         for rel_fname in addable_rel_fnames:
             fname = os.path.basename(rel_fname)
-            if fname in words or rel_fname in words:
-                mentioned_rel_fnames.add(rel_fname)
+            if fname not in fname_to_rel_fnames:
+                fname_to_rel_fnames[fname] = []
+            fname_to_rel_fnames[fname].append(rel_fname)
+
+        for fname, rel_fnames in fname_to_rel_fnames.items():
+            if len(rel_fnames) == 1 and (fname in words or rel_fnames[0] in words):
+                mentioned_rel_fnames.add(rel_fnames[0])
 
         if not mentioned_rel_fnames:
             return