diff --git a/aider/io.py b/aider/io.py
index 6af2e8d15..3bbdca3ed 100644
--- a/aider/io.py
+++ b/aider/io.py
@@ -88,9 +88,7 @@ class InputOutput:
         user_input_color="blue",
         tool_output_color=None,
         tool_error_color="red",
-        completions_height=10,
     ):
-        self.completions_height = completions_height
         no_color = os.environ.get("NO_COLOR")
         if no_color is not None and no_color != "":
             pretty = False
diff --git a/aider/main.py b/aider/main.py
index 8f4066855..316cfebad 100644
--- a/aider/main.py
+++ b/aider/main.py
@@ -205,7 +205,6 @@ def main(args=None, input=None, output=None):
         user_input_color=args.user_input_color,
         tool_output_color=args.tool_output_color,
         tool_error_color=args.tool_error_color,
-        completions_height=args.completions_height,
     )
 
     if args.verbose: