diff --git a/aider/io.py b/aider/io.py
index ea9fd9a2b..287c70b5e 100644
--- a/aider/io.py
+++ b/aider/io.py
@@ -804,9 +804,14 @@ class InputOutput:
                 hist = message.strip() if strip else message
                 self.append_chat_history(hist, linebreak=True, blockquote=True)
 
-        message = Text(message)
-        style = dict(style=color) if self.pretty and color else dict()
-        self.console.print(message, **style)
+        try:
+            message = Text(message)
+            style = dict(style=color) if self.pretty and color else dict()
+            self.console.print(message, **style)
+        except UnicodeEncodeError:
+            # Fallback to ASCII-safe output
+            message = message.encode('ascii', errors='replace').decode('ascii')
+            self.console.print(message, **style)
 
     def tool_error(self, message="", strip=True):
         self.num_error_outputs += 1