diff --git a/phpBB/styles/subSilver/template/posting_buttons.html b/phpBB/styles/subSilver/template/posting_buttons.html
index a6540e3634..e4527570d4 100644
--- a/phpBB/styles/subSilver/template/posting_buttons.html
+++ b/phpBB/styles/subSilver/template/posting_buttons.html
@@ -87,7 +87,7 @@
 			</tr>
 		<!-- ENDIF -->
 		<tr>
-			<td><input type="text" name="helpbox" style="width:100%" maxlength="100" class="helpline" value="{L_STYLES_TIP}" /></td>
+			<td><input type="text" readonly="readonly" name="helpbox" style="width:100%" maxlength="100" class="helpline" value="{L_STYLES_TIP}" /></td>
 			<!-- IF not $S_SIGNATURE and not S_EDIT_DRAFT -->
 				<td class="genmed" align="center">{L_FONT_COLOR}</td>
 			<!-- ENDIF -->