diff --git a/server/gitea/client.go b/server/gitea/client.go
index 7037805..9777043 100644
--- a/server/gitea/client.go
+++ b/server/gitea/client.go
@@ -315,19 +315,15 @@ func (client *Client) extToMime(ext string) string {
 	return mimeType
 }
 
-func (client *Client) getMimeTypeByExtension(resource string) (string, string) {
+func (client *Client) getMimeTypeByExtension(resource string) (mimeType, rawType string) {
 	rawExt := path.Ext(resource)
 	innerExt := rawExt
 	switch rawExt {
-	case ".gz":
-		fallthrough
-	case ".br":
-		fallthrough
-	case ".zst":
+	case ".gz", ".br", ".zst":
 		innerExt = path.Ext(resource[:len(resource)-len(rawExt)])
 	}
-	rawType := client.extToMime(rawExt)
-	mimeType := rawType
+	rawType = client.extToMime(rawExt)
+	mimeType = rawType
 	if innerExt != rawExt {
 		mimeType = client.extToMime(innerExt)
 	}
diff --git a/server/upstream/upstream.go b/server/upstream/upstream.go
index 0ecef82..98137ba 100644
--- a/server/upstream/upstream.go
+++ b/server/upstream/upstream.go
@@ -73,13 +73,12 @@ func AcceptEncodings(header string) []string {
 	qualities := make(map[string]float64)
 
 	for _, encoding := range strings.Split(header, ",") {
-		splits := strings.SplitN(encoding, ";q=", 2)
-		name := splits[0]
+		name, quality_str, has_quality := strings.Cut(encoding, ";q=")
 		quality := 1.0
 
-		if len(splits) > 1 {
+		if has_quality {
 			var err error
-			quality, err = strconv.ParseFloat(splits[1], 64)
+			quality, err = strconv.ParseFloat(quality_str, 64)
 			if err != nil || quality < 0 {
 				continue
 			}
@@ -120,7 +119,7 @@ func AcceptEncodings(header string) []string {
 		// sort in reverse order; big quality comes first
 		return cmp.Compare(qualities[y], qualities[x])
 	})
-	log.Trace().Msgf("decided encoding order: %#v", encodings)
+	log.Trace().Msgf("decided encoding order: %v", encodings)
 	return encodings
 }