diff --git a/gtk/gtkcellarea.h b/gtk/gtkcellarea.h
index 008b8bb10f..f9c1c45b90 100644
--- a/gtk/gtkcellarea.h
+++ b/gtk/gtkcellarea.h
@@ -326,8 +326,8 @@ GtkSizeRequestMode    gtk_cell_area_get_request_mode               (GtkCellArea
 void                  gtk_cell_area_get_preferred_width            (GtkCellArea        *area,
 								    GtkCellAreaContext *context,
 								    GtkWidget          *widget,
-								    gint               *minimum_size,
-								    gint               *natural_size);
+								    gint               *minimum_width,
+								    gint               *natural_width);
 void                  gtk_cell_area_get_preferred_height_for_width (GtkCellArea        *area,
 								    GtkCellAreaContext *context,
 								    GtkWidget          *widget,
@@ -337,8 +337,8 @@ void                  gtk_cell_area_get_preferred_height_for_width (GtkCellArea
 void                  gtk_cell_area_get_preferred_height           (GtkCellArea        *area,
 								    GtkCellAreaContext *context,
 								    GtkWidget          *widget,
-								    gint               *minimum_size,
-								    gint               *natural_size);
+								    gint               *minimum_height,
+								    gint               *natural_height);
 void                  gtk_cell_area_get_preferred_width_for_height (GtkCellArea        *area,
 								    GtkCellAreaContext *context,
 								    GtkWidget          *widget,