1 files changed, 2 insertions, 0 deletions

diff --git a/js/RrdGraph.js b/js/RrdGraph.js
index 1a9cc9f..d2dbdb4 100644
--- a/js/RrdGraph.js
+++ b/js/RrdGraph.js
@@ -325,6 +325,8 @@ RrdGraphDesc.prototype.tick = function (graph, vname, color, fraction, legend)
         this.col = color;
         if (fraction !== undefined)
                 this.yrule = fraction;
+        else
+                this.yrule = 0.1;
         if (legend === undefined) this.legend = '';
         else if (legend.length === 0) this.legend = '';
         else this.legend = '  '+legend;