diff --git a/src/PhpSpreadsheet/Chart/Renderer/JpGraph.php b/src/PhpSpreadsheet/Chart/Renderer/JpGraph.php
index ec3f6e8a..28d1b2c5 100644
--- a/src/PhpSpreadsheet/Chart/Renderer/JpGraph.php
+++ b/src/PhpSpreadsheet/Chart/Renderer/JpGraph.php
@@ -344,7 +344,7 @@ class JpGraph implements IRenderer
         }
         $grouping = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotGrouping();
 
-        $labelCount = count($this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());
+        $labelCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount();
         if ($labelCount > 0) {
             $datasetLabels = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
             $datasetLabels = $this->formatDataSetLabels($groupID, $datasetLabels, $labelCount, $rotation);
@@ -549,7 +549,7 @@ class JpGraph implements IRenderer
         }
 
         // Set the x-axis labels
-        $labelCount = count($this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount());
+        $labelCount = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotValuesByIndex(0)->getPointCount();
         if ($labelCount > 0) {
             $datasetLabels = $this->chart->getPlotArea()->getPlotGroupByIndex($groupID)->getPlotCategoryByIndex(0)->getDataValues();
             $datasetLabels = $this->formatDataSetLabels($groupID, $datasetLabels, $labelCount);