diff --git a/server/FFmpegSource.h b/server/FFmpegSource.h
index c3ef3cc6..4bc44e33 100644
--- a/server/FFmpegSource.h
+++ b/server/FFmpegSource.h
@@ -77,10 +77,10 @@ public:
      */
     void play(const std::string &ffmpeg_cmd_key, const std::string &src_url, const std::string &dst_url, int timeout_ms, const onPlay &cb);
 
-    const std::string &getSrcUrl() const { return _src_url; }
-    const std::string &getDstUrl() const { return _dst_url; }
-    const std::string &getCmd() const { return _cmd; }
-    const std::string &getCmdKey() const { return _ffmpeg_cmd_key; }
+    const std::string& getSrcUrl() const { return _src_url; }
+    const std::string& getDstUrl() const { return _dst_url; }
+    const std::string& getCmd() const { return _cmd; }
+    const std::string& getCmdKey() const { return _ffmpeg_cmd_key; }
     const mediakit::MediaInfo& getMediaInfo() const { return _media_info; }
 
     /**
diff --git a/src/Player/PlayerProxy.h b/src/Player/PlayerProxy.h
index 52d57285..304d22a6 100644
--- a/src/Player/PlayerProxy.h
+++ b/src/Player/PlayerProxy.h
@@ -140,8 +140,8 @@ public:
     TranslationInfo getTranslationInfo();
 
     const std::string& getUrl() const { return _pull_url; }
-    const MediaTuple &getMediaTuple() const { return _tuple; }
-    const ProtocolOption &getOption() const { return _option; }
+    const MediaTuple& getMediaTuple() const { return _tuple; }
+    const ProtocolOption& getOption() const { return _option; }
 
 private:
     // MediaSourceEvent override