diff --git a/util/style/style.py b/util/style/style.py
index a966f3097..9f3f0d0f0 100644
--- a/util/style/style.py
+++ b/util/style/style.py
@@ -113,6 +113,8 @@ style_ignores = [
     # Ignore external projects as they are unlikely to follow the gem5
     # coding convention.
     _re_ignore("^ext/"),
+    # Ignore test data, as they are not code
+    _re_ignore("^tests/(?:quick|long)/"),
 ]
 
 def check_ignores(fname):