diff --git a/testing/scripts/diff-remove-timestamps b/testing/scripts/diff-remove-timestamps
index 770a181c59..325268d832 100755
--- a/testing/scripts/diff-remove-timestamps
+++ b/testing/scripts/diff-remove-timestamps
@@ -9,5 +9,5 @@ else
    sed="sed -E"
 fi
 
-$sed 's/(0\.000000)|([0-9]{10}\.[0-9]{2,8})/XXXXXXXXXX.XXXXXX/g' | \
+$sed 's/(0\.000000)|([0-9]{9,10}\.[0-9]{2,8})/XXXXXXXXXX.XXXXXX/g' | \
 $sed 's/^ *#(open|close).(19|20)..-..-..-..-..-..$/#\1 XXXX-XX-XX-XX-XX-XX/g'