diff --git a/templates/index.html b/templates/index.html
index 37577ff9..6e978f2d 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -28,7 +28,7 @@
 <body>	
 	{{ boardlist.top }}
 	{% if pm %}<div class="top_notice">You have <a href="?/PM/{{ pm.id }}">an unread PM</a>{% if pm.waiting > 0 %}, plus {{ pm.waiting }} more waiting{% endif %}.</div><hr />{% endif %}
-	{% if config.url_banner %}<img class="banner" src="{{ config.url_banner }}" {% if config.banner_height %}style="width:{% if config.banner_width %}{{ config.banner_width }}px{% endif %};height:{{ config.banner_height }}px" {% endif %}alt="" />{% endif %}
+	{% if config.url_banner %}<img class="banner" src="{{ config.url_banner }}" {% if config.banner_width or config.banner_height %}style="{% if config.banner_width %}width:{{ config.banner_width }}px{% endif %};{% if config.banner_width %}height:{{ config.banner_height }}px{% endif %}" {% endif %}alt="" />{% endif %}
 	<h1>{{ board.url }} - {{ board.name }}</h1>
 	<div class="title">{% if board.title %}{{ board.title }}{% endif %}<p>{% if mod %}<a href="?/">Return to dashboard</a>{% endif %}</p></div>
 	
diff --git a/templates/thread.html b/templates/thread.html
index 909325f8..a5f5ad62 100644
--- a/templates/thread.html
+++ b/templates/thread.html
@@ -28,7 +28,7 @@
 <body>
 	{{ boardlist.top }}
 	{% if pm %}<div class="top_notice">You have <a href="?/PM/{{ pm.id }}">an unread PM</a>{% if pm.waiting > 0 %}, plus {{ pm.waiting }} more waiting{% endif %}.</div><hr />{% endif %}
-	{% if config.url_banner %}<img class="banner" src="{{ config.url_banner }}" {% if config.banner_height %}style="width:{% if config.banner_width %}{{ config.banner_width }}px{% endif %};height:{{ config.banner_height }}px" {% endif %}alt="" />{% endif %}
+	{% if config.url_banner %}<img class="banner" src="{{ config.url_banner }}" {% if config.banner_width or config.banner_height %}style="{% if config.banner_width %}width:{{ config.banner_width }}px{% endif %};{% if config.banner_width %}height:{{ config.banner_height }}px{% endif %}" {% endif %}alt="" />{% endif %}
 	<h1>{{ board.url }} - {{ board.name }}</h1>
 	<div class="title">{% if board.title %}{{ board.title }}{% endif %}<p>{% if mod %}<a href="?/">Return to dashboard</a>{% endif %}</p></div>
 	
