diff --git a/libavfilter/af_aformat.c b/libavfilter/af_aformat.c
index fd3f40df80..5658da11ea 100644
--- a/libavfilter/af_aformat.c
+++ b/libavfilter/af_aformat.c
@@ -145,5 +145,4 @@ AVFilter avfilter_af_aformat = {
 
     .inputs        = avfilter_af_aformat_inputs,
     .outputs       = avfilter_af_aformat_outputs,
-    .priv_class    = &aformat_class,
 };
diff --git a/libavfilter/vf_blackframe.c b/libavfilter/vf_blackframe.c
index f782ae27ce..7b38fcb782 100644
--- a/libavfilter/vf_blackframe.c
+++ b/libavfilter/vf_blackframe.c
@@ -133,6 +133,4 @@ AVFilter avfilter_vf_blackframe = {
     .inputs    = avfilter_vf_blackframe_inputs,
 
     .outputs   = avfilter_vf_blackframe_outputs,
-
-    .priv_class = &blackframe_class,
 };
diff --git a/libavfilter/vf_crop.c b/libavfilter/vf_crop.c
index 35bb3e699e..02f0831503 100644
--- a/libavfilter/vf_crop.c
+++ b/libavfilter/vf_crop.c
@@ -348,5 +348,4 @@ AVFilter avfilter_vf_crop = {
 
     .inputs    = avfilter_vf_crop_inputs,
     .outputs   = avfilter_vf_crop_outputs,
-    .priv_class = &crop_class,
 };