diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 3982c5d8e..193b90d76 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -1367,10 +1367,11 @@ class Coder:
                 interrupted = True
 
         if interrupted:
-            # check if the last messages was role==user, append the ^C Key.. to it if so. ai!
-            self.cur_messages += [
-                dict(role="user", content="^C KeyboardInterrupt"),
-                dict(role="assistant", content="I see that you interrupted my previous reply."),
+            if self.cur_messages and self.cur_messages[-1]["role"] == "user":
+                self.cur_messages[-1]["content"] += "\n^C KeyboardInterrupt"
+            else:
+                self.cur_messages += [dict(role="user", content="^C KeyboardInterrupt")]
+            self.cur_messages += [dict(role="assistant", content="I see that you interrupted my previous reply.")]
             ]
             return