diff --git a/tests/run_agent/test_percentage_clamp.py b/tests/run_agent/test_percentage_clamp.py
index fcb66c5bbbf..ca407ef8dda 100644
--- a/tests/run_agent/test_percentage_clamp.py
+++ b/tests/run_agent/test_percentage_clamp.py
@@ -81,10 +81,12 @@ class TestSourceLinesAreClamped:
             return f.read()
 
     def test_gateway_run_clamped(self):
-        src = self._read_file("gateway/run.py")
+        # The /usage stats handler was extracted from gateway/run.py into
+        # gateway/slash_commands.py (god-file decomposition Phase 3b).
+        src = self._read_file("gateway/slash_commands.py")
         # Check that the stats handler has min(100, ...)
         assert "min(100, ctx.last_prompt_tokens" in src, (
-            "gateway/run.py stats pct is not clamped with min(100, ...)"
+            "gateway/slash_commands.py stats pct is not clamped with min(100, ...)"
         )
 
     def test_cli_clamped(self):