diff --git a/core/meson.build b/core/meson.build
index f3acbb0..195cd0b 100644
--- a/core/meson.build
+++ b/core/meson.build
@@ -1,7 +1,6 @@
 
 core_moc_headers = [
   'include/Data/IDataProvider.h',
-  'include/Data/DataSeriesMergeHelper.h',
   'include/DataSource/DataSourceController.h',
   'include/DataSource/DataSourceItemAction.h',
   'include/Network/NetworkController.h',
diff --git a/core/src/Data/VectorSeries.cpp b/core/src/Data/VectorSeries.cpp
index 879d689..a51b0cc 100644
--- a/core/src/Data/VectorSeries.cpp
+++ b/core/src/Data/VectorSeries.cpp
@@ -29,13 +29,11 @@ std::vector<double> flatten(std::vector<double> xValues, std::vector<double> yVa
 
     auto result = std::vector<double>();
     result.reserve(xValues.size() * 3);
-
-    while (!xValues.empty()) {
-        result.insert(result.cend(), {xValues.front(), yValues.front(), zValues.front()});
-        xValues.erase(xValues.begin());
-        yValues.erase(yValues.begin());
-        zValues.erase(zValues.begin());
-    }
+    for (int i = 0; i < xValues.size(); i++) {
+        result.push_back(xValues[i]);
+        result.push_back(yValues[i]);
+        result.push_back(zValues[i]);
+     }
 
     return result;
 }
diff --git a/gui/meson.build b/gui/meson.build
index 8fe81c1..1011d4f 100644
--- a/gui/meson.build
+++ b/gui/meson.build
@@ -48,7 +48,7 @@ gui_sources = [
   'src/TimeWidget/TimeWidget.cpp',
   'src/Variable/VariableInspectorWidget.cpp',
   'src/Variable/VariableMenuHeaderWidget.cpp',
-  'src/Variable/RenamevariableDialog.cpp',
+  'src/Variable/RenameVariableDialog.cpp',
   'src/Visualization/VisualizationGraphHelper.cpp',
   'src/Visualization/VisualizationGraphRenderingDelegate.cpp',
   'src/Visualization/VisualizationGraphWidget.cpp',