diff --git a/ChangeLog b/ChangeLog
index 2689e59d..3f847095 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,7 @@
 2/10/12 started 7.30.4
 - remove options from format string in .dzi (thanks Martin)
 - vipsCC.pc required the wrong version of vips (thanks Alessandro)
+- larger max tile size for dzsave
 
 13/9/12 started 7.30.3
 - linecache sized itself too large
diff --git a/libvips/foreign/dzsave.c b/libvips/foreign/dzsave.c
index 1489bca9..0e408b24 100644
--- a/libvips/foreign/dzsave.c
+++ b/libvips/foreign/dzsave.c
@@ -1129,7 +1129,7 @@ vips_foreign_save_dz_class_init( VipsForeignSaveDzClass *class )
 		_( "Tile overlap in pixels" ),
 		VIPS_ARGUMENT_OPTIONAL_INPUT,
 		G_STRUCT_OFFSET( VipsForeignSaveDz, overlap ),
-		0, 1024, 0 );
+		0, 8192, 0 );
 
 	VIPS_ARG_INT( class, "tile_size", 11, 
 		_( "Tile size" ),