diff --git a/phpBB/adm/style/install_update.html b/phpBB/adm/style/install_update.html
index 965a66a7d7..fc056bbf1f 100644
--- a/phpBB/adm/style/install_update.html
+++ b/phpBB/adm/style/install_update.html
@@ -358,7 +358,7 @@
 				<dl>
 					<dt style="width: 60%;"><strong><!-- IF deleted.DIR_PART -->{deleted.DIR_PART}<br /><!-- ENDIF -->{deleted.FILE_PART}</strong>
 					</dt>
-					<dd style="margin-{S_CONTENT_FLOW_BEGIN} 60%;">
+					<dd style="margin-{S_CONTENT_FLOW_BEGIN}: 60%;">
 						<!-- IF not deleted.S_BINARY -->[<a href="{deleted.U_SHOW_DIFF}" onclick="diff_popup(this.href); return false;">{deleted.L_SHOW_DIFF}</a>]<!-- ELSE -->{L_BINARY_FILE}<!-- ENDIF -->
 					</dd>
 				</dl>