diff --git a/ext/flac/gstflacenc.c b/ext/flac/gstflacenc.c
index 858d09777a..f53a24160b 100644
--- a/ext/flac/gstflacenc.c
+++ b/ext/flac/gstflacenc.c
@@ -644,13 +644,13 @@ gst_flac_enc_getcaps (GstAudioEncoder * enc, GstCaps * filter)
       s2 = gst_structure_copy (s);
 
       if (i == 1) {
-        gst_structure_set (s, "channels", G_TYPE_INT, 1, NULL);
+        gst_structure_set (s2, "channels", G_TYPE_INT, 1, NULL);
       } else {
         guint64 channel_mask;
 
         gst_audio_channel_positions_to_mask (channel_positions[i - 1], i,
             &channel_mask);
-        gst_structure_set (s, "channels", G_TYPE_INT, i, "channel-mask",
+        gst_structure_set (s2, "channels", G_TYPE_INT, i, "channel-mask",
             GST_TYPE_BITMASK, channel_mask, NULL);
       }