diff --git a/aider/coders/__init__.py b/aider/coders/__init__.py
index 8f3929e85..edce98129 100644
--- a/aider/coders/__init__.py
+++ b/aider/coders/__init__.py
@@ -4,7 +4,7 @@ from .editblock_coder import EditBlockCoder
 from .editblock_fenced_coder import EditBlockFencedCoder
 from .help_coder import HelpCoder
 from .junior_editblock_coder import JuniorEditBlockCoder
-from .junior_wholefile_coder import JuniorWholeFileCoder
+from .junior_whole_coder import JuniorWholeFileCoder
 from .senior_coder import SeniorCoder
 from .udiff_coder import UnifiedDiffCoder
 from .wholefile_coder import WholeFileCoder
diff --git a/aider/coders/junior_whole_coder.py b/aider/coders/junior_whole_coder.py
index c11544560..d864cfab9 100644
--- a/aider/coders/junior_whole_coder.py
+++ b/aider/coders/junior_whole_coder.py
@@ -1,7 +1,7 @@
-from .junior_whole_prompts import JuniorWholePrompts
-from .whole_coder import WholeCoder
+from .junior_whole_prompts import JuniorWholeFilePrompts
+from .wholefile_coder import WholeFileCoder
 
 
-class JuniorWholeCoder(WholeCoder):
+class JuniorWholeFileCoder(WholeFileCoder):
     edit_format = "junior-whole"
-    gpt_prompts = JuniorWholePrompts()
+    gpt_prompts = JuniorWholeFilePrompts()
diff --git a/aider/coders/junior_whole_prompts.py b/aider/coders/junior_whole_prompts.py
index 90f03d100..4441b76be 100644
--- a/aider/coders/junior_whole_prompts.py
+++ b/aider/coders/junior_whole_prompts.py
@@ -3,7 +3,7 @@
 from .wholefile_prompts import WholeFilePrompts
 
 
-class WholeFilePrompts(WholeFilePrompts):
+class JuniorWholeFilePrompts(WholeFilePrompts):
     main_system = """Act as an expert software developer and make changes to source code.
 {lazy_prompt}
 Output a copy of each file that needs changes.
diff --git a/aider/models.py b/aider/models.py
index dbecfe52b..f8e9eb557 100644
--- a/aider/models.py
+++ b/aider/models.py
@@ -469,7 +469,7 @@ MODEL_SETTINGS = [
         "openai/o1-mini",
         "whole",
         weak_model_name="openai/gpt-4o-mini",
-        junior_model_name="gpt-4o",
+        junior_model_name="openai/gpt-4o",
         junior_edit_format="junior-diff",
         use_repo_map=True,
         reminder="user",
@@ -515,6 +515,8 @@ MODEL_SETTINGS = [
         "openrouter/openai/o1-mini",
         "whole",
         weak_model_name="openrouter/openai/gpt-4o-mini",
+        junior_model_name="openrouter/openai/gpt-4o",
+        junior_edit_format="junior-diff",
         use_repo_map=True,
         reminder="user",
         use_system_prompt=False,