diff --git a/ext/theora/theoraenc.c b/ext/theora/theoraenc.c
index dc1865ca20..8f19986ca5 100644
--- a/ext/theora/theoraenc.c
+++ b/ext/theora/theoraenc.c
@@ -441,6 +441,7 @@ theora_enc_sink_getcaps (GstPad * pad)
       supported_formats);
   caps = gst_caps_from_string (caps_string);
   g_free (caps_string);
+  g_free (supported_formats);
   GST_DEBUG ("Supported caps: %" GST_PTR_FORMAT, caps);
 
   return caps;