diff --git a/aider/repomap.py b/aider/repomap.py
index 1b9f8a005..363992af4 100644
--- a/aider/repomap.py
+++ b/aider/repomap.py
@@ -76,6 +76,8 @@ class RepoMap:
 
     cache_missing = False
 
+    warned_files = set()
+
     def __init__(
         self,
         map_tokens=1024,
@@ -307,7 +309,10 @@ class RepoMap:
 
         for fname in fnames:
             if not Path(fname).is_file():
-                self.io.tool_error(f"Repo-map can't include {fname}")
+                if fname not in self.warned_files:
+                    self.io.tool_error(f"Repo-map can't include {fname}")
+
+                self.warned_files.add(fname)
                 continue
 
             # dump(fname)