diff --git a/src/engine/gstenginepipeline.cpp b/src/engine/gstenginepipeline.cpp
index ee6361166..9f6ab1c61 100644
--- a/src/engine/gstenginepipeline.cpp
+++ b/src/engine/gstenginepipeline.cpp
@@ -561,6 +561,7 @@ GstPadProbeReturn GstEnginePipeline::HandoffCallback(GstPad *pad, GstPadProbeInf
   int rate = 0;
   gst_structure_get_int(structure, "channels", &channels);
   gst_structure_get_int(structure, "rate", &rate);
+  gst_caps_unref(caps);
 
   GstBuffer *buf = gst_pad_probe_info_get_buffer(info);
   GstBuffer *buf16 = nullptr;