diff --git a/gst/gobject2gtk.h b/gst/gobject2gtk.h
index 6797373db6..a90ac97be5 100644
--- a/gst/gobject2gtk.h
+++ b/gst/gobject2gtk.h
@@ -176,7 +176,7 @@ struct _GParamSpec {
 #define g_value_init(value,t)			((value)->type = (t))
 
 void g_object_class_install_property(GtkObjectClass *oclass,guint property_id,GParamSpec *pspec);
-GParamSpec *g_object_class_find_property(GtkObjectClass *class,gchar *name);
+GParamSpec *g_object_class_find_property(GtkObjectClass *oclass,gchar *name);
 
 #define G_IS_PARAM_SPEC_ENUM(pspec)		(GTK_FUNDAMENTAL_TYPE(pspec->value_type) == GTK_TYPE_ENUM)