diff --git a/libavfilter/vf_phase.c b/libavfilter/vf_phase.c
index 23b339c880..1818355ac2 100644
--- a/libavfilter/vf_phase.c
+++ b/libavfilter/vf_phase.c
@@ -41,7 +41,7 @@ enum PhaseMode {
 
 typedef struct PhaseContext {
     const AVClass *class;
-    enum PhaseMode mode;
+    int mode;                   ///<PhaseMode
     AVFrame *frame; /* previous frame */
     int nb_planes;
     int planeheight[4];