diff --git a/tools/check/forbidden_strings_in_code.txt b/tools/check/forbidden_strings_in_code.txt
index 21ab0bab77..393e942b2a 100755
--- a/tools/check/forbidden_strings_in_code.txt
+++ b/tools/check/forbidden_strings_in_code.txt
@@ -173,4 +173,7 @@ PreferenceManager\.getDefaultSharedPreferences==2
 # findViewById
 
 ### Do not use `template_` string. Please remove the prefix `template_` to use the generated resource instead.
-R\.string\.template_
\ No newline at end of file
+R\.string\.template_
+
+### Use the Clock interface, or use `measureTimeMillis`
+System\.currentTimeMillis\(\)===2