diff --git a/html/html.go b/html/html.go
index 9f6fa2c..87ef1b9 100644
--- a/html/html.go
+++ b/html/html.go
@@ -19,7 +19,7 @@ func FileListPage(req string, entries []Entry, big_preview_mode bool) string {
 	if !big_preview_mode {
 		headerCSS1 = "display: flex;"
 	} else {
-		headerCSS1 = "width: 320px;"
+		headerCSS1 = "width: 512px;"
 	}
 	headerCSS2 := ""
 	if !big_preview_mode {
diff --git a/thumbnail/thumbnail.go b/thumbnail/thumbnail.go
index b49ebca..9df72df 100644
--- a/thumbnail/thumbnail.go
+++ b/thumbnail/thumbnail.go
@@ -70,7 +70,7 @@ var FauxGLFormats = []string{
 	".3DS",
 }
 
-var thumbnailSize = 48
+var thumbnailSize = 48 * 2
 var AA = 2
 
 var thumbnailCache = map[string][]byte{}