diff --git a/src/video_decompress/libavcodec.c b/src/video_decompress/libavcodec.c
index 09da96616..f40cb2631 100644
--- a/src/video_decompress/libavcodec.c
+++ b/src/video_decompress/libavcodec.c
@@ -554,6 +554,7 @@ static int hwacc_cuda_init(struct AVCodecContext *s, struct hw_accel_state *stat
 }
 #endif
 
+#ifdef HWACC_COMMON_IMPL
 static void
 check_pixfmt_hw_eligibility(enum AVPixelFormat sw_pix_fmt)
 {
@@ -576,6 +577,7 @@ check_pixfmt_hw_eligibility(enum AVPixelFormat sw_pix_fmt)
                         fmt_name);
         }
 }
+#endif
 
 static enum AVPixelFormat get_format_callback(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
 {
diff --git a/src/video_rxtx/ultragrid_rtp.hpp b/src/video_rxtx/ultragrid_rtp.hpp
index 53be20d78..d1e78fa15 100644
--- a/src/video_rxtx/ultragrid_rtp.hpp
+++ b/src/video_rxtx/ultragrid_rtp.hpp
@@ -53,7 +53,7 @@ class ultragrid_rtp_video_rxtx : public rtp_video_rxtx {
 public:
         ultragrid_rtp_video_rxtx(std::map<std::string, param_u> const &);
         virtual ~ultragrid_rtp_video_rxtx();
-        virtual void join();
+        void join() override;
         uint32_t get_ssrc();
 
         // transcoder functions