diff --git a/src/widget/weffectchainpresetbutton.cpp b/src/widget/weffectchainpresetbutton.cpp
index ed5d33da02f..52803616da3 100644
--- a/src/widget/weffectchainpresetbutton.cpp
+++ b/src/widget/weffectchainpresetbutton.cpp
@@ -9,7 +9,6 @@
 WEffectChainPresetButton::WEffectChainPresetButton(QWidget* parent, EffectsManager* pEffectsManager)
         : QPushButton(parent),
           WBaseWidget(this),
-          m_iChainNumber(0),
           m_pEffectsManager(pEffectsManager),
           m_pChainPresetManager(pEffectsManager->getChainPresetManager()),
           m_pMenu(make_parented<QMenu>(new QMenu(this))) {
@@ -22,9 +21,13 @@ WEffectChainPresetButton::WEffectChainPresetButton(QWidget* parent, EffectsManag
 }
 
 void WEffectChainPresetButton::setup(const QDomNode& node, const SkinContext& context) {
-    m_iChainNumber = EffectWidgetUtils::getEffectUnitNumberFromNode(node, context);
     m_pChain = EffectWidgetUtils::getEffectChainFromNode(
             node, context, m_pEffectsManager);
+    VERIFY_OR_DEBUG_ASSERT(m_pChain) {
+        SKIN_WARNING(node, context)
+                << "EffectChainPresetButton node could not attach to effect chain";
+        return;
+    }
     connect(m_pChain.get(),
             &EffectChain::chainPresetChanged,
             this,
diff --git a/src/widget/weffectchainpresetbutton.h b/src/widget/weffectchainpresetbutton.h
index e04243fc0c8..2b0fa6242ae 100644
--- a/src/widget/weffectchainpresetbutton.h
+++ b/src/widget/weffectchainpresetbutton.h
@@ -21,7 +21,6 @@ class WEffectChainPresetButton : public QPushButton, public WBaseWidget {
 
   private:
     bool event(QEvent* pEvent);
-    int m_iChainNumber;
     EffectChainPointer m_pChain;
 
     EffectsManager* m_pEffectsManager;
diff --git a/src/widget/weffectselector.cpp b/src/widget/weffectselector.cpp
index e9e39849b88..25dfef52aaa 100644
--- a/src/widget/weffectselector.cpp
+++ b/src/widget/weffectselector.cpp
@@ -12,7 +12,6 @@
 WEffectSelector::WEffectSelector(QWidget* pParent, EffectsManager* pEffectsManager)
         : QComboBox(pParent),
           WBaseWidget(this),
-          m_iEffectSlotIndex(-1),
           m_pEffectsManager(pEffectsManager),
           m_pVisibleEffectsList(pEffectsManager->getVisibleEffectsList()) {
     // Prevent this widget from getting focused by Tab/Shift+Tab
@@ -28,8 +27,6 @@ void WEffectSelector::setup(const QDomNode& node, const SkinContext& context) {
             node, context, m_pEffectsManager);
     m_pEffectSlot = EffectWidgetUtils::getEffectSlotFromNode(
             node, context, pChainSlot);
-    m_iEffectSlotIndex = EffectWidgetUtils::getEffectSlotIndexFromNode(
-            node, context);
 
     if (m_pEffectSlot != nullptr) {
         connect(m_pVisibleEffectsList.data(),
diff --git a/src/widget/weffectselector.h b/src/widget/weffectselector.h
index 14a35227aad..c8c5b5b5624 100644
--- a/src/widget/weffectselector.h
+++ b/src/widget/weffectselector.h
@@ -22,7 +22,6 @@ class WEffectSelector : public QComboBox, public WBaseWidget {
     bool event(QEvent* pEvent) override;
 
   private:
-    int m_iEffectSlotIndex;
     EffectsManager* m_pEffectsManager;
     VisibleEffectsListPointer m_pVisibleEffectsList;
     EffectSlotPointer m_pEffectSlot;