diff --git a/chart.module b/chart.module
index 76e177b..16147d8 100644
--- a/chart.module
+++ b/chart.module
@@ -413,7 +413,6 @@ function _chart_adjust_resolution($chart_id, &$data, $max_value = NULL) {
     // Set max data value
     if (!isset($max[$chart_id])) {
       $max[$chart_id] = isset($max_value) ? $max_value : _chart_get_max($data);
-      $max[$chart_id] += $max[$chart_id] * 0.05; // Add a margin.
     }
 
     // Encoding resolution