diff --git a/libavfilter/vf_histeq.c b/libavfilter/vf_histeq.c
index 659b696dc7..ad9fedbf4c 100644
--- a/libavfilter/vf_histeq.c
+++ b/libavfilter/vf_histeq.c
@@ -58,7 +58,6 @@ typedef struct {
     float strength;
     float intensity;
     enum HisteqAntibanding antibanding;
-    char* antibanding_str;
     int in_histogram [256];        ///< input histogram
     int out_histogram[256];        ///< output histogram
     int LUT[256];                  ///< lookup table derived from histogram[]