diff --git a/ext/pulse/pulseaudiosink.c b/ext/pulse/pulseaudiosink.c
index a770135ace..a16a6ad184 100644
--- a/ext/pulse/pulseaudiosink.c
+++ b/ext/pulse/pulseaudiosink.c
@@ -872,6 +872,7 @@ gst_pulse_audio_sink_sink_setcaps (GstPad * pad, GstCaps * caps)
 
   GST_PULSE_AUDIO_SINK_UNLOCK (pbin);
 
+  gst_caps_unref (caps);
   gst_object_unref (pbin);
 
   return ret;