diff --git a/php.ini-development b/php.ini-development
index e9c7cd662f0..b23321a9db7 100644
--- a/php.ini-development
+++ b/php.ini-development
@@ -1920,12 +1920,12 @@ ldap.max_links = -1
 ;opcache.inherited_hack=1
 ;opcache.dups_fix=0
 
-; The location of the OPcache blacklist file.
-; The OPcache blacklist file is a text file that holds the names of files
+; The location of the OPcache blacklist file (wildcards allowed).
+; Each OPcache blacklist file is a text file that holds the names of files
 ; that should not be accelerated. The file format is to add each filename
 ; to a new line. The filename may be a full path or just a file prefix
 ; (i.e., /var/www/x  blacklists all the files and directories in /var/www
-; that start with 'x').
+; that start with 'x'). Line starting with a ; are ignored (comments).
 ;opcache.blacklist_filename=
 
 ; Allows exclusion of large files from being cached. By default all files
diff --git a/php.ini-production b/php.ini-production
index 600debc9e75..8d1f359da4a 100644
--- a/php.ini-production
+++ b/php.ini-production
@@ -1920,12 +1920,12 @@ ldap.max_links = -1
 ;opcache.inherited_hack=1
 ;opcache.dups_fix=0
 
-; The location of the OPcache blacklist file.
-; The OPcache blacklist file is a text file that holds the names of files
+; The location of the OPcache blacklist file (wildcards allowed).
+; Each OPcache blacklist file is a text file that holds the names of files
 ; that should not be accelerated. The file format is to add each filename
 ; to a new line. The filename may be a full path or just a file prefix
 ; (i.e., /var/www/x  blacklists all the files and directories in /var/www
-; that start with 'x').
+; that start with 'x'). Line starting with a ; are ignored (comments).
 ;opcache.blacklist_filename=
 
 ; Allows exclusion of large files from being cached. By default all files