diff --git a/python/ruff-ecosystem/ruff_ecosystem/projects.py b/python/ruff-ecosystem/ruff_ecosystem/projects.py
index 63670a0be2..cf7b732409 100644
--- a/python/ruff-ecosystem/ruff_ecosystem/projects.py
+++ b/python/ruff-ecosystem/ruff_ecosystem/projects.py
@@ -209,6 +209,8 @@ class CheckOptions(CommandOptions):
             # Ignore internal test rules
             "--ignore",
             "RUF9",
+            # Never apply fixes, as they pollute the comparison results
+            "--no-fix",
             # Use the concise format for comparing violations
             "--output-format",
             "concise",