diff --git a/php7_functions_in_b64.txt b/php7_functions_in_b64.txt
index 177526e..cd8b45c 100644
--- a/php7_functions_in_b64.txt
+++ b/php7_functions_in_b64.txt
@@ -1,7 +1,9 @@
 # This is a list of php7 internal functions and their 3 base64 fingerprints.
 # Some patterns are too short to be useful with scan.php.
 # All base64 patterns 3 characters or less have been commented out.
-
+# This file should be ready to use in place of patterns_raw.txt
+# Expect false positives and slow scan speeds.
+# Use this pattern file on known malware to find new patterns.
 
 # _
 #X