diff --git a/aider/commands.py b/aider/commands.py
index c1958ac79..4b47b3927 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -586,7 +586,7 @@ class Commands:
         text = document.text_before_cursor
 
         # Skip the first word and the space after it
-        after_command = " ".join(text.split()[1:])
+        after_command = text.split()[-1]
 
         # Create a new Document object with the text after the command
         new_document = Document(after_command, cursor_position=len(after_command))