diff --git a/README.md b/README.md
index 412352b5e577d5d076e70e07645729cbc551e3d3..174d2891519ee0d05bac398ab96ad7aa28b95ed6 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@
 ```plantuml
 digraph snakemake_dag {
     graph[bgcolor=white, margin=0];
+    rankdir=LR;
     node[shape=box, style=rounded, fontname=sans,                 fontsize=10, penwidth=2];
     edge[penwidth=2, color=grey];
 	0[label = "all", color = "0.32 0.6 0.85", style="rounded"];