diff --git a/tools/check_test_registration.py b/tools/check_test_registration.py
index 353b73b25..aef595bd3 100644
--- a/tools/check_test_registration.py
+++ b/tools/check_test_registration.py
@@ -1,7 +1,6 @@
 import argparse
 import re
 import subprocess
-import sys
 from pathlib import Path
 
 TEST_OUTPUT = r"tests[\\/]"
@@ -11,8 +10,6 @@ KNOWN_UNRUN = {
     "agc_driver_recorder_tests",
     "video_out_flip_tests",
 }
-if sys.platform != "win32":
-    KNOWN_UNRUN.add("guest_formatting_tests")
 
 
 def built(build):