-static gchar *get_column_title (const GSheetModel *model, gint col);
-static gchar *get_row_title (const GSheetModel *model, gint row);
-static gboolean get_row_sensitivity (const GSheetModel *model, gint row);
+static gchar *get_column_title (const PsppireSheetModel *model, gint col);
+static gchar *get_row_title (const PsppireSheetModel *model, gint row);
+static gboolean get_row_sensitivity (const PsppireSheetModel *model, gint row);