diff --git a/phpBB/adm/style/acp_styles.html b/phpBB/adm/style/acp_styles.html
index 92ceaebc08..64123808c6 100644
--- a/phpBB/adm/style/acp_styles.html
+++ b/phpBB/adm/style/acp_styles.html
@@ -87,6 +87,7 @@
 <!-- ENDIF -->
 
 <!-- IF .styles_list -->
+	<!-- EVENT acp_styles_list_before -->
 	<table class="table1 styles">
 	<thead>
 	<tr>
diff --git a/phpBB/docs/events.md b/phpBB/docs/events.md
index 2639871cae..60f4dc2312 100644
--- a/phpBB/docs/events.md
+++ b/phpBB/docs/events.md
@@ -190,6 +190,13 @@ acp_ranks_list_header_before
 * Purpose: Add content after the last header-column (but before the action column)
 in the ranks list in the ACP
 
+acp_styles_list_before
+===
+* Locations:
+    + adm/style/acp_styles.html
+* Since: 3.1.7-RC1
+* Purpose: Add content before list of styles
+
 acp_users_profile_before
 ===
 * Locations: