diff --git a/ChangeLog b/ChangeLog
index ab59c1e4..38dc7f85 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,8 @@
 - display param default and range in usage
 - better docs
 - more tests
+- renamed VIPS_FOREIGN_DZ_DEPTH_1 as VIPS_FOREIGN_DZ_DEPTH_ONE etc. to help
+  bindings
 
 24/12/14 started 7.42.1
 - add gobject-2.0 to Requires: in vips and vips-cpp .pc files
diff --git a/libvips/deprecated/im_vips2dz.c b/libvips/deprecated/im_vips2dz.c
index 19fbe319..3a304991 100644
--- a/libvips/deprecated/im_vips2dz.c
+++ b/libvips/deprecated/im_vips2dz.c
@@ -59,7 +59,7 @@ im_vips2dz( IMAGE *in, const char *filename )
 	char *suffix = ".jpeg";
 	int overlap = 0;
 	int tile_size = 256;
-	VipsForeignDzDepth depth = VIPS_FOREIGN_DZ_DEPTH_1PIXEL; 
+	VipsForeignDzDepth depth = VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL; 
 	gboolean centre = FALSE;
 	VipsAngle angle = VIPS_ANGLE_D0; 
 
diff --git a/libvips/foreign/dzsave.c b/libvips/foreign/dzsave.c
index 15a60a60..1d110271 100644
--- a/libvips/foreign/dzsave.c
+++ b/libvips/foreign/dzsave.c
@@ -542,15 +542,15 @@ pyramid_build( VipsForeignSaveDz *dz, Layer *above,
 	}
 
 	switch( dz->depth ) {
-	case VIPS_FOREIGN_DZ_DEPTH_1PIXEL:
+	case VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL:
 		limit = 1;
 		break;
 
-	case VIPS_FOREIGN_DZ_DEPTH_1TILE:
+	case VIPS_FOREIGN_DZ_DEPTH_ONETILE:
 		limit = dz->tile_size;
 		break;
 
-	case VIPS_FOREIGN_DZ_DEPTH_1:
+	case VIPS_FOREIGN_DZ_DEPTH_ONE:
 		limit = VIPS_MAX( width, height );
 		break;
 
@@ -1603,11 +1603,11 @@ vips_foreign_save_dz_build( VipsObject *object )
 	 */
 	if( dz->layout == VIPS_FOREIGN_DZ_LAYOUT_DZ ) {
 		if( !vips_object_argument_isset( object, "depth" ) )
-			dz->depth = VIPS_FOREIGN_DZ_DEPTH_1PIXEL;
+			dz->depth = VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL;
 	}
 	else
 		if( !vips_object_argument_isset( object, "depth" ) )
-			dz->depth = VIPS_FOREIGN_DZ_DEPTH_1TILE;
+			dz->depth = VIPS_FOREIGN_DZ_DEPTH_ONETILE;
 
 	if( VIPS_OBJECT_CLASS( vips_foreign_save_dz_parent_class )->
 		build( object ) )
@@ -1949,7 +1949,7 @@ vips_foreign_save_dz_class_init( VipsForeignSaveDzClass *class )
 		VIPS_ARGUMENT_OPTIONAL_INPUT,
 		G_STRUCT_OFFSET( VipsForeignSaveDz, depth ),
 		VIPS_TYPE_FOREIGN_DZ_DEPTH, 
-			VIPS_FOREIGN_DZ_DEPTH_1PIXEL ); 
+			VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL ); 
 
 	VIPS_ARG_BOOL( class, "centre", 13, 
 		_( "Center" ), 
@@ -2021,7 +2021,7 @@ vips_foreign_save_dz_init( VipsForeignSaveDz *dz )
 	dz->overlap = 1;
 	dz->tile_size = 256;
 	dz->tile_count = 0;
-	dz->depth = VIPS_FOREIGN_DZ_DEPTH_1PIXEL; 
+	dz->depth = VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL; 
 	dz->angle = VIPS_ANGLE_D0; 
 	dz->container = VIPS_FOREIGN_DZ_CONTAINER_FS; 
 }
diff --git a/libvips/include/vips/foreign.h b/libvips/include/vips/foreign.h
index 4a2418d7..a695d4e0 100644
--- a/libvips/include/vips/foreign.h
+++ b/libvips/include/vips/foreign.h
@@ -496,16 +496,16 @@ typedef enum {
 
 /**
  * VipsForeignDzDepth:
- * @VIPS_FOREIGN_DZ_DEPTH_1PIXEL: create layers down to 1x1 pixel
- * @VIPS_FOREIGN_DZ_DEPTH_1TILE: create layers down to 1x1 tile
- * @VIPS_FOREIGN_DZ_DEPTH_1: only create a single layer
+ * @VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL: create layers down to 1x1 pixel
+ * @VIPS_FOREIGN_DZ_DEPTH_ONETILE: create layers down to 1x1 tile
+ * @VIPS_FOREIGN_DZ_DEPTH_ONE: only create a single layer
  *
  * How many pyramid layers to create.
  */
 typedef enum {
-	VIPS_FOREIGN_DZ_DEPTH_1PIXEL,
-	VIPS_FOREIGN_DZ_DEPTH_1TILE,
-	VIPS_FOREIGN_DZ_DEPTH_1,
+	VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL,
+	VIPS_FOREIGN_DZ_DEPTH_ONETILE,
+	VIPS_FOREIGN_DZ_DEPTH_ONE,
 	VIPS_FOREIGN_DZ_DEPTH_LAST
 } VipsForeignDzDepth;
 
diff --git a/libvips/iofuncs/enumtypes.c b/libvips/iofuncs/enumtypes.c
index 540f49c4..a7f8e8e4 100644
--- a/libvips/iofuncs/enumtypes.c
+++ b/libvips/iofuncs/enumtypes.c
@@ -152,9 +152,9 @@ vips_foreign_dz_depth_get_type( void )
 
 	if( etype == 0 ) {
 		static const GEnumValue values[] = {
-			{VIPS_FOREIGN_DZ_DEPTH_1PIXEL, "VIPS_FOREIGN_DZ_DEPTH_1PIXEL", "1pixel"},
-			{VIPS_FOREIGN_DZ_DEPTH_1TILE, "VIPS_FOREIGN_DZ_DEPTH_1TILE", "1tile"},
-			{VIPS_FOREIGN_DZ_DEPTH_1, "VIPS_FOREIGN_DZ_DEPTH_1", "1"},
+			{VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL, "VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL", "onepixel"},
+			{VIPS_FOREIGN_DZ_DEPTH_ONETILE, "VIPS_FOREIGN_DZ_DEPTH_ONETILE", "onetile"},
+			{VIPS_FOREIGN_DZ_DEPTH_ONE, "VIPS_FOREIGN_DZ_DEPTH_ONE", "one"},
 			{VIPS_FOREIGN_DZ_DEPTH_LAST, "VIPS_FOREIGN_DZ_DEPTH_LAST", "last"},
 			{0, NULL, NULL}
 		};