diff --git a/aider/coder.py b/aider/coder.py
index 7ebbec8c9..fd4789045 100755
--- a/aider/coder.py
+++ b/aider/coder.py
@@ -500,6 +500,7 @@ class Coder:
                         show_diff = diffs.diff_partial_update(
                             orig_lines,
                             new_lines,
+                            final=True,
                         ).splitlines()
                         output += show_diff
                     else:
diff --git a/aider/diffs.py b/aider/diffs.py
index 6be64ca98..0bd7f0a95 100644
--- a/aider/diffs.py
+++ b/aider/diffs.py
@@ -23,7 +23,7 @@ def main():
         input()
 
 
-def diff_partial_update(lines_orig, lines_updated):
+def diff_partial_update(lines_orig, lines_updated, final=False):
     """
     Given only the first part of an updated file, show the diff while
     ignoring the block of "deleted" lines that are past the end of the
@@ -40,6 +40,9 @@ def diff_partial_update(lines_orig, lines_updated):
 
     lines_orig = lines_orig[:last_non_deleted]
 
+    if not final:
+        lines_updated = lines_updated[:-1] + ["\n"]
+
     diff = difflib.unified_diff(lines_orig, lines_updated)
     # unified_diff = list(unified_diff)[2:]
     # dump(repr(list(diff)))