diff --git a/libavfilter/vf_setfield.c b/libavfilter/vf_setfield.c
index eb4df74943..96e9d18bd3 100644
--- a/libavfilter/vf_setfield.c
+++ b/libavfilter/vf_setfield.c
@@ -37,7 +37,7 @@ enum SetFieldMode {
 
 typedef struct {
     const AVClass *class;
-    enum SetFieldMode mode;
+    int mode;                   ///< SetFieldMode
 } SetFieldContext;
 
 #define OFFSET(x) offsetof(SetFieldContext, x)