diff --git a/gst-libs/gst/video/gstbasevideoencoder.c b/gst-libs/gst/video/gstbasevideoencoder.c
index 5107f69db6..15fba3ce4b 100644
--- a/gst-libs/gst/video/gstbasevideoencoder.c
+++ b/gst-libs/gst/video/gstbasevideoencoder.c
@@ -937,6 +937,7 @@ gst_base_video_encoder_finish_frame (GstBaseVideoEncoder * base_video_encoder,
       GST_DEBUG_OBJECT (base_video_encoder, "force_keyframe_headers");
       if (base_video_encoder->headers) {
         headers = gst_buffer_ref (base_video_encoder->headers);
+        headers = gst_buffer_make_writable (headers);
       }
       base_video_encoder->force_keyframe_headers = FALSE;
     }