diff --git a/gst/app/cgo_exports.go b/gst/app/cgo_exports.go
index 06e8eca..7a3dcf2 100644
--- a/gst/app/cgo_exports.go
+++ b/gst/app/cgo_exports.go
@@ -91,9 +91,8 @@ func goSeekDataCb(src *C.GstAppSrc, offset C.guint64, userData C.gpointer) C.gbo
 		return gboolean(true)
 	}
 	gosrc := wrapCSource(src)
-	var ret C.gboolean
-	ret = gboolean(cbs.SeekDataFunc(gosrc, uint64(offset)))
-	return ret
+
+	return gboolean(cbs.SeekDataFunc(gosrc, uint64(offset)))
 }
 
 //export goSinkEOSCb
@@ -106,7 +105,8 @@ func goSinkEOSCb(sink *C.GstAppSink, userData C.gpointer) {
 		return
 	}
 	gosink := wrapCSink(sink)
-	gosink.WithTransferOriginal(func() { cbs.EOSFunc(gosink) })
+
+	cbs.EOSFunc(gosink)
 }
 
 //export goSinkNewPrerollCb
@@ -119,8 +119,9 @@ func goSinkNewPrerollCb(sink *C.GstAppSink, userData C.gpointer) C.GstFlowReturn
 		return C.GstFlowReturn(gst.FlowOK)
 	}
 	gosink := wrapCSink(sink)
-	var ret C.GstFlowReturn
-	gosink.WithTransferOriginal(func() { ret = C.GstFlowReturn(cbs.NewPrerollFunc(gosink)) })
+
+	ret := C.GstFlowReturn(cbs.NewPrerollFunc(gosink))
+
 	return ret
 }
 
@@ -134,8 +135,9 @@ func goSinkNewSampleCb(sink *C.GstAppSink, userData C.gpointer) C.GstFlowReturn
 		return C.GstFlowReturn(gst.FlowOK)
 	}
 	gosink := wrapCSink(sink)
-	var ret C.GstFlowReturn
-	gosink.WithTransferOriginal(func() { ret = C.GstFlowReturn(cbs.NewSampleFunc(gosink)) })
+
+	ret := C.GstFlowReturn(cbs.NewSampleFunc(gosink))
+
 	return ret
 }