diff --git a/gio/gaction.h b/gio/gaction.h
index f8e92ff3a..79ae2228d 100644
--- a/gio/gaction.h
+++ b/gio/gaction.h
@@ -93,7 +93,7 @@ gboolean                g_action_parse_detailed_name                    (const g
 
 GLIB_AVAILABLE_IN_2_38
 gchar *                 g_action_print_detailed_name                    (const gchar        *action_name,
-                                                                         GVariant           *parameter);
+                                                                         GVariant           *target_value);
 
 G_END_DECLS
 
diff --git a/gio/gfile.h b/gio/gfile.h
index e6db1f0ea..0c77dc8ef 100644
--- a/gio/gfile.h
+++ b/gio/gfile.h
@@ -1231,7 +1231,7 @@ void     g_file_replace_contents_async       (GFile                  *file,
 					      gpointer                user_data);
 GLIB_AVAILABLE_IN_2_40
 void     g_file_replace_contents_bytes_async (GFile                  *file,
-					      GBytes                 *bytes,
+					      GBytes                 *contents,
 					      const char             *etag,
 					      gboolean                make_backup,
 					      GFileCreateFlags        flags,
diff --git a/gio/gsettingsschema.h b/gio/gsettingsschema.h
index 9038939ab..5555921d2 100644
--- a/gio/gsettingsschema.h
+++ b/gio/gsettingsschema.h
@@ -72,10 +72,10 @@ GLIB_AVAILABLE_IN_2_32
 const gchar *           g_settings_schema_get_path                      (GSettingsSchema        *schema);
 GLIB_AVAILABLE_IN_2_40
 GSettingsSchemaKey *    g_settings_schema_get_key                       (GSettingsSchema        *schema,
-                                                                         const gchar            *key);
+                                                                         const gchar            *name);
 GLIB_AVAILABLE_IN_2_40
 gboolean                g_settings_schema_has_key                       (GSettingsSchema        *schema,
-                                                                         const gchar            *key);
+                                                                         const gchar            *name);
 
 #define                 G_TYPE_SETTINGS_SCHEMA_KEY                      (g_settings_schema_key_get_type ())
 GLIB_AVAILABLE_IN_2_40