diff --git a/modules/video_coding/codecs/vp9/libvpx_vp9_encoder.cc b/modules/video_coding/codecs/vp9/libvpx_vp9_encoder.cc
index 54585082db..add3d5501e 100644
--- a/modules/video_coding/codecs/vp9/libvpx_vp9_encoder.cc
+++ b/modules/video_coding/codecs/vp9/libvpx_vp9_encoder.cc
@@ -1004,6 +1004,9 @@ int LibvpxVp9Encoder::Encode(const VideoFrame& input_image,
     if (layer_frames_.empty()) {
       return WEBRTC_VIDEO_CODEC_ERROR;
     }
+    if (layer_frames_.front().IsKeyframe()) {
+      force_key_frame_ = true;
+    }
   }
 
   vpx_svc_layer_id_t layer_id = {0};
diff --git a/test/fuzzers/corpora/vp9-encoder-references-corpus/a1c75436e1872a23391d58316d88c45da0fb7682 b/test/fuzzers/corpora/vp9-encoder-references-corpus/a1c75436e1872a23391d58316d88c45da0fb7682
new file mode 100644
index 0000000000..fc538ac83f
Binary files /dev/null and b/test/fuzzers/corpora/vp9-encoder-references-corpus/a1c75436e1872a23391d58316d88c45da0fb7682 differ