diff --git a/server/upstream/upstream.go b/server/upstream/upstream.go
index e793755..292e7d3 100644
--- a/server/upstream/upstream.go
+++ b/server/upstream/upstream.go
@@ -159,9 +159,9 @@ func (o *Options) Upstream(ctx *context.Context, giteaClient *gitea.Client) (fin
 	ctx.RespWriter.Header().Set(gitea.PagesCacheIndicatorHeader, header.Get(gitea.PagesCacheIndicatorHeader))
 	ctx.RespWriter.Header().Set(gitea.ContentLengthHeader, header.Get(gitea.ContentLengthHeader))
 	if o.ServeRaw {
-		ctx.RespWriter.Header().Set(gitea.ContentTypeHeader, header.Get(gitea.ContentTypeHeader))
-	} else {
 		ctx.RespWriter.Header().Set(gitea.ContentTypeHeader, rawMime)
+	} else {
+		ctx.RespWriter.Header().Set(gitea.ContentTypeHeader, header.Get(gitea.ContentTypeHeader))
 	}
 
 	if ctx.StatusCode != http.StatusNotFound {