diff --git a/gibaseinfo.c b/gibaseinfo.c
index e128a9a4d..10e5d7c38 100644
--- a/gibaseinfo.c
+++ b/gibaseinfo.c
@@ -1,4 +1,4 @@
-/* GObject introspection: Repository implementation
+/* GObject introspection: Base struct implementation
  *
  * Copyright (C) 2005 Matthias Clasen
  * Copyright (C) 2008,2009 Red Hat, Inc.
diff --git a/gicallableinfo.c b/gicallableinfo.c
index 5013c5d69..da6b50b05 100644
--- a/gicallableinfo.c
+++ b/gicallableinfo.c
@@ -1,4 +1,4 @@
-/* GObject introspection: Repository implementation
+/* GObject introspection: Callable implementation
  *
  * Copyright (C) 2005 Matthias Clasen
  * Copyright (C) 2008,2009 Red Hat, Inc.
diff --git a/gicallableinfo.h b/gicallableinfo.h
index c122bd5d2..479baa2ae 100644
--- a/gicallableinfo.h
+++ b/gicallableinfo.h
@@ -1,4 +1,4 @@
-/* GObject introspection: Functions
+/* GObject introspection: Callable
  *
  * Copyright (C) 2005 Matthias Clasen
  * Copyright (C) 2008,2009 Red Hat, Inc.
@@ -50,5 +50,5 @@ void                   g_callable_info_load_arg        (GICallableInfo *info,
 G_END_DECLS
 
 
-#endif  /* __G_IREPOSITORY_H__ */
+#endif  /* __GICALLABLEINFO_H__ */
 
diff --git a/gifunctioninfo.c b/gifunctioninfo.c
index 30c7ca69f..07e0ec677 100644
--- a/gifunctioninfo.c
+++ b/gifunctioninfo.c
@@ -1,4 +1,4 @@
-/* GObject introspection: Repository implementation
+/* GObject introspection: Function implementation
  *
  * Copyright (C) 2005 Matthias Clasen
  * Copyright (C) 2008,2009 Red Hat, Inc.
diff --git a/gifunctioninfo.h b/gifunctioninfo.h
index 94b2d6f9a..9c47bd16a 100644
--- a/gifunctioninfo.h
+++ b/gifunctioninfo.h
@@ -1,4 +1,4 @@
-/* GObject introspection: Functions
+/* GObject introspection: Function
  *
  * Copyright (C) 2005 Matthias Clasen
  * Copyright (C) 2008,2009 Red Hat, Inc.
@@ -93,5 +93,5 @@ gboolean              g_function_info_invoke         (GIFunctionInfo *info,
 G_END_DECLS
 
 
-#endif  /* __G_IREPOSITORY_H__ */
+#endif  /* __GIFUNCTIONINFO_H__ */