diff --git a/libvips/foreign/dzsave.c b/libvips/foreign/dzsave.c
index c14dc5de20..09903059b8 100644
--- a/libvips/foreign/dzsave.c
+++ b/libvips/foreign/dzsave.c
@@ -772,9 +772,9 @@ tile_name( Layer *layer, char *buf, int x, int y )
 		vips_snprintf( dirname, PATH_MAX, "%s/%d", 
 			dz->basename, layer->n );
 		vips_snprintf( dirname2, PATH_MAX, "%s/%d", 
-			dirname, y );
+			dirname, x );
 		vips_snprintf( buf, PATH_MAX, "%s/%d%s", 
-			dirname2, x, dz->suffix );
+			dirname2, y, dz->suffix );
 
 		if( !vips_existsf( "%s", dirname ) &&
 			vips_mkdirf( "%s", dirname ) ) {