diff --git a/Makefile b/Makefile
index 4a55c1b..b22155a 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ MAKEFLAGS += --no-builtin-variables
 ELEV_RELEASE_JSON_ENDPOINT?=repos/jonaseberle/autoortho-scenery/releases/tags/elevation-v0.0.1
 SPLITSIZE?=125
 SHELL=/bin/bash
-ZL?=16
+ZL?=17
 
 TILENAME?=test