diff --git a/sys/v4l2/gstv4l2videodec.c b/sys/v4l2/gstv4l2videodec.c
index 0183b257b7..c23572642a 100644
--- a/sys/v4l2/gstv4l2videodec.c
+++ b/sys/v4l2/gstv4l2videodec.c
@@ -983,6 +983,8 @@ gst_v4l2_video_dec_subclass_init (gpointer g_class, gpointer data)
       "Codec/Decoder/Video", cdata->description,
       "Nicolas Dufresne <nicolas.dufresne@collabora.com>");
 
+  gst_caps_unref (cdata->sink_caps);
+  gst_caps_unref (cdata->src_caps);
   g_free (cdata);
 }
 
diff --git a/sys/v4l2/gstv4l2videoenc.c b/sys/v4l2/gstv4l2videoenc.c
index 72db259e12..4a14f31f61 100644
--- a/sys/v4l2/gstv4l2videoenc.c
+++ b/sys/v4l2/gstv4l2videoenc.c
@@ -1116,6 +1116,8 @@ gst_v4l2_video_enc_subclass_init (gpointer g_class, gpointer data)
       gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
           cdata->src_caps));
 
+  gst_caps_unref (cdata->sink_caps);
+  gst_caps_unref (cdata->src_caps);
   g_free (cdata);
 }