diff --git a/src/zm_ffmpeg_camera.cpp b/src/zm_ffmpeg_camera.cpp
index 6415b2134..d0900ad78 100644
--- a/src/zm_ffmpeg_camera.cpp
+++ b/src/zm_ffmpeg_camera.cpp
@@ -66,8 +66,10 @@ static enum AVPixelFormat find_fmt_by_hw_type(const enum AVHWDeviceType type) {
       return AV_PIX_FMT_VDPAU;
     case AV_HWDEVICE_TYPE_CUDA:
       return AV_PIX_FMT_CUDA;
+#ifdef AV_HWDEVICE_TYPE_MMAL
     case AV_HWDEVICE_TYPE_MMAL:
       return AV_PIX_FMT_MMAL;
+#endif
     case AV_HWDEVICE_TYPE_VIDEOTOOLBOX:
       return AV_PIX_FMT_VIDEOTOOLBOX;
     default: