diff --git a/ChangeLog b/ChangeLog
index ea7fe5aa57a6a2a3b261bf9865a170a9f9e9d4d4..3d9c1a8fb52ae8197e874c72ca5a7f6e3e51de19 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2006-03-06  Tim-Philipp Müller  <tim at centricular dot net>
+
+	* gst/gstutils.h:
+	  Do proper cast here to make GST_BOILERPLATE_WITH_INTERFACE
+	  usable in c++ code (#333417; patch by: Christophe Fergeau)
+
 2006-03-06  Thomas Vander Stichele  <thomas at apestaart dot org>
 
 	* gst/gstclock.h:
diff --git a/gst/gstutils.h b/gst/gstutils.h
index 7f445f7b294d9676d9ef295a09a39848ee1867e7..ca3ab2ec2d988bd8f78b16fc5727ff76f1d0225b 100644
--- a/gst/gstutils.h
+++ b/gst/gstutils.h
@@ -189,7 +189,7 @@ static gboolean interface_as_function ## _supported (type *object, GType iface_t
 static void                                                             \
 type_as_function ## _implements_interface_init (GstImplementsInterfaceClass *klass)     \
 {                                                                       \
-  klass->supported = (gpointer)interface_as_function ## _supported;     \
+  klass->supported = (gboolean (*)(GstImplementsInterface*, GType))interface_as_function ## _supported;     \
 }                                                                       \
                                                                         \
 static void                                                             \