diff --git a/gst/gstreamer-arg-types.py b/gst/gstreamer-arg-types.py
index 72d9dec18e..4ada678331 100644
--- a/gst/gstreamer-arg-types.py
+++ b/gst/gstreamer-arg-types.py
@@ -22,5 +22,8 @@
 
 import argtypes
 
-#arg = argtypes.PointerArg('GstEvent')
-#argtypes.matcher.register('GstEvent*', arg)
+arg = argtypes.UInt64Arg()
+argtypes.matcher.register('GstClockTime', arg)
+
+arg = argtypes.Int64Arg()
+argtypes.matcher.register('GstClockTimeDiff', arg)
diff --git a/gstreamer/gstreamer-arg-types.py b/gstreamer/gstreamer-arg-types.py
index 72d9dec18e..4ada678331 100644
--- a/gstreamer/gstreamer-arg-types.py
+++ b/gstreamer/gstreamer-arg-types.py
@@ -22,5 +22,8 @@
 
 import argtypes
 
-#arg = argtypes.PointerArg('GstEvent')
-#argtypes.matcher.register('GstEvent*', arg)
+arg = argtypes.UInt64Arg()
+argtypes.matcher.register('GstClockTime', arg)
+
+arg = argtypes.Int64Arg()
+argtypes.matcher.register('GstClockTimeDiff', arg)