diff --git a/src/plugins/projectexplorer/projectimporter.cpp b/src/plugins/projectexplorer/projectimporter.cpp
index 5fc989b193e..4aaa404065c 100644
--- a/src/plugins/projectexplorer/projectimporter.cpp
+++ b/src/plugins/projectexplorer/projectimporter.cpp
@@ -131,7 +131,9 @@ QList<BuildInfo *> ProjectImporter::import(const Utils::FileName &importPath, bo
         }
     }
 
-    qDeleteAll(dataList);
+    foreach (auto *dd, dataList)
+        deleteDirectoryData(dd);
+    dataList.clear();
 
     if (result.isEmpty() && !silent)
         QMessageBox::critical(Core::ICore::mainWindow(),
diff --git a/src/plugins/projectexplorer/projectimporter.h b/src/plugins/projectexplorer/projectimporter.h
index e6406787f20..c44829e713e 100644
--- a/src/plugins/projectexplorer/projectimporter.h
+++ b/src/plugins/projectexplorer/projectimporter.h
@@ -86,6 +86,8 @@ protected:
     // will get one of the results from examineDirectory
     virtual QList<BuildInfo *> buildInfoListForKit(const Kit *k, void *directoryData) const = 0;
 
+    virtual void deleteDirectoryData(void *directoryData) const = 0;
+
     using KitSetupFunction = std::function<void(Kit *)>;
     ProjectExplorer::Kit *createTemporaryKit(const KitSetupFunction &setup) const;
 
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.cpp b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.cpp
index 3310f25ce78..a3508b81dce 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.cpp
@@ -265,6 +265,11 @@ QList<BuildInfo *> QmakeProjectImporter::buildInfoListForKit(const Kit *k, void
     return result;
 }
 
+void QmakeProjectImporter::deleteDirectoryData(void *directoryData) const
+{
+    delete static_cast<DirectoryData *>(directoryData);
+}
+
 static ToolChain *preferredToolChain(BaseQtVersion *qtVersion, const FileName &ms,
                                      const QMakeStepConfig::TargetArchConfig &archConfig)
 {
diff --git a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
index 4859ca0ee99..5d1aec6c8ed 100644
--- a/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
+++ b/src/plugins/qmakeprojectmanager/qmakeprojectimporter.h
@@ -52,6 +52,7 @@ private:
     QList<ProjectExplorer::BuildInfo *> buildInfoListForKit(const ProjectExplorer::Kit *k,
                                                             void *directoryData) const final;
 
+    void deleteDirectoryData(void *directoryData) const final;
 
     ProjectExplorer::Kit *createTemporaryKit(const QtProjectImporter::QtVersionData &data,
                                              const Utils::FileName &parsedSpec,