diff --git a/src/ThreeDimensionalConformityAnalysisView/ConformityAnalysis.cpp b/src/ThreeDimensionalConformityAnalysisView/ConformityAnalysis.cpp
index 98aa45d..21a7b5a 100644
--- a/src/ThreeDimensionalConformityAnalysisView/ConformityAnalysis.cpp
+++ b/src/ThreeDimensionalConformityAnalysisView/ConformityAnalysis.cpp
@@ -16,6 +16,8 @@ ConformityAnalysis::ConformityAnalysis(QWidget *parent) :
 
 ConformityAnalysis::~ConformityAnalysis()
 {
+    qDeleteAll(_spectrumDataList);
+    _spectrumDataList.clear();
     delete ui;
 }