Index: frontends/php/include/classes/class.cchart.php
===================================================================
--- frontends/php/include/classes/class.cchart.php	(revision 31396)
+++ frontends/php/include/classes/class.cchart.php	(working copy)
@@ -2244,7 +2244,7 @@
 		$this->fullSizeX = $this->sizeX + $this->shiftXleft + $this->shiftXright + 1;
 		$this->fullSizeY = $this->sizeY + $this->shiftY + $this->legendOffsetY;
 
-		if ($this->drawLegend) {
+		if ($this->drawLegend && $this->sizeY > ZBX_GRAPH_LEGEND_HEIGHT ) {
 			$this->fullSizeY += 14 * ($this->num + 1 + (($this->sizeY < 120) ? 0 : count($this->triggers))) + 8;
 		}
 
@@ -2362,7 +2362,7 @@
 		$this->drawLeftSide();
 		$this->drawRightSide();
 
-		if ($this->drawLegend) {
+		if ($this->drawLegend && $this->sizeY > ZBX_GRAPH_LEGEND_HEIGHT) {
 			$this->drawTriggers();
 			$this->drawPercentile();
 			$this->drawLegend();