diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index e4e6ceba7..64a260524 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -855,6 +855,7 @@ class Coder:
         finally:
             if self.mdstream:
                 self.live_incremental_response(True)
+                self.mdstream = None
 
             if self.multi_response_content:
                 self.multi_response_content += self.partial_response_content