diff --git a/phpBB/adm/style/acp_posting_buttons.html b/phpBB/adm/style/acp_posting_buttons.html
index e5f96b0c22..c0c5aacd74 100644
--- a/phpBB/adm/style/acp_posting_buttons.html
+++ b/phpBB/adm/style/acp_posting_buttons.html
@@ -28,7 +28,7 @@
 	<!-- IF S_LINKS_ALLOWED -->
 		<input type="button" class="button2" accesskey="w" name="addbbcode16" value="URL" style="text-decoration: underline; width: 40px" onclick="bbstyle(16)" title="{L_BBCODE_W_HELP}" />
 	<!-- ENDIF -->
-	<select name="addbbcode20" onchange="bbfontstyle('[size=' + this.form.addbbcode20.options[this.form.addbbcode20.selectedIndex].value + ']', '[/size]');this.form.addbbcode20.selectedIndex = 2;" title="{L_BBCODE_F_HELP}">
+	<select name="addbbcode18" onchange="bbfontstyle('[size=' + this.form.addbbcode18.options[this.form.addbbcode18.selectedIndex].value + ']', '[/size]');this.form.addbbcode18.selectedIndex = 2;" title="{L_BBCODE_F_HELP}">
 		<option value="50">{L_FONT_TINY}</option>
 		<option value="85">{L_FONT_SMALL}</option>
 		<option value="100" selected="selected">{L_FONT_NORMAL}</option>
diff --git a/phpBB/includes/constants.php b/phpBB/includes/constants.php
index f560dbfbcb..3304194cf4 100644
--- a/phpBB/includes/constants.php
+++ b/phpBB/includes/constants.php
@@ -174,7 +174,7 @@ define('BBCODE_UID_LEN', 8);
 
 // Number of core BBCodes
 define('NUM_CORE_BBCODES', 12);
-define('NUM_PREDEFINED_BBCODES', 22);
+define('NUM_PREDEFINED_BBCODES', 20);
 
 // BBCode IDs
 define('BBCODE_ID_QUOTE', 0);
diff --git a/phpBB/styles/prosilver/template/posting_buttons.html b/phpBB/styles/prosilver/template/posting_buttons.html
index 096dbbe8fa..ee98cb57ce 100644
--- a/phpBB/styles/prosilver/template/posting_buttons.html
+++ b/phpBB/styles/prosilver/template/posting_buttons.html
@@ -81,7 +81,7 @@
 	<button type="button" class="button button-icon-only bbcode-color" name="bbpalette" id="bbpalette" value="{L_FONT_COLOR}" onclick="change_palette();" title="{L_BBCODE_S_HELP}">
 		{{ Icon('font', 'droplet', '', true, 'fas c-button-icon') }}
 	</button>
-	<select name="addbbcode20" class="bbcode-size" onchange="bbfontstyle('[size=' + this.form.addbbcode20.options[this.form.addbbcode20.selectedIndex].value + ']', '[/size]');this.form.addbbcode20.selectedIndex = 2;" title="{L_BBCODE_F_HELP}">
+	<select name="addbbcode18" class="bbcode-size" onchange="bbfontstyle('[size=' + this.form.addbbcode18.options[this.form.addbbcode18.selectedIndex].value + ']', '[/size]');this.form.addbbcode18.selectedIndex = 2;" title="{L_BBCODE_F_HELP}">
 		<option value="50">{L_FONT_TINY}</option>
 		<option value="85">{L_FONT_SMALL}</option>
 		<option value="100" selected="selected">{L_FONT_NORMAL}</option>