diff --git a/res/include/style/viewer.css b/res/include/style/viewer.css
index fc7bc5d..f42b2d2 100644
--- a/res/include/style/viewer.css
+++ b/res/include/style/viewer.css
@@ -124,7 +124,7 @@
 	font-size: 0;
 	line-height: 0;
 }
-.file_viewer > .sponsors > * {
+.file_viewer > .sponsors > .sponsors_banner {
 	display: block;
 	margin: auto;
 	transform-origin: 0 0;
diff --git a/res/template/advertisements.html b/res/template/advertisements.html
index 20087bb..0e80d4c 100644
--- a/res/template/advertisements.html
+++ b/res/template/advertisements.html
@@ -112,7 +112,7 @@
 		</div>
 	{{ else if eq .Other.AdBannerType 15 }}
 	<!-- AuctionX Display platform tag START -->
-	<div id="27517x728x90x4605x_ADSLOT1" clickTrack="%%CLICK_URL_ESC%%" class="sponsors_banner" style="width: 728px; height: 90px;"></div>
+	<div id="27517x728x90x4605x_ADSLOT1" clickTrack="%%CLICK_URL_ESC%%" style="display: block; margin: auto;"></div>
 	<script type="text/javascript" async src="https://served-by.pixfuture.com/www/delivery/headerbid.js" slotId="27517x728x90x4605x_ADSLOT1" refreshTime="5" refreshInterval="60"></script>
 	<!-- AuctionX Display platform tag END -->
 	{{ end }}
diff --git a/webcontroller/file_viewer.go b/webcontroller/file_viewer.go
index 2881c0e..83cd880 100644
--- a/webcontroller/file_viewer.go
+++ b/webcontroller/file_viewer.go
@@ -93,8 +93,8 @@ func (vd *viewerData) adType(files []pixelapi.ListFile) {
 		panic(fmt.Errorf("random number generator returned unrecognised number: %d", i))
 	}
 
-	// If the file is larger than 10 MB we enable floating popups
-	if avgSize > 10e6 {
+	// If the file is larger than 50 MB we enable floating popups
+	if avgSize > 50e6 {
 		vd.AdFloaterType = propellerFloat
 	}
 }