diff --git a/libavfilter/vf_stereo3d.c b/libavfilter/vf_stereo3d.c
index 2140120eba..d86a7f2e95 100644
--- a/libavfilter/vf_stereo3d.c
+++ b/libavfilter/vf_stereo3d.c
@@ -63,7 +63,7 @@ enum StereoCode {
 };
 
 typedef struct StereoComponent {
-    enum StereoCode format;
+    int format;                 ///< StereoCode
     int width, height;
     int off_left, off_right;
     int off_lstep, off_rstep;