diff --git a/src/slic3r/GUI/ExtraRenderers.cpp b/src/slic3r/GUI/ExtraRenderers.cpp
index 27e2c122457..584896dd592 100644
--- a/src/slic3r/GUI/ExtraRenderers.cpp
+++ b/src/slic3r/GUI/ExtraRenderers.cpp
@@ -49,8 +49,7 @@ BitmapTextRenderer::~BitmapTextRenderer()
 {
 #ifdef SUPPORTS_MARKUP
     #ifdef wxHAS_GENERIC_DATAVIEWCTRL
-    if (m_markupText)
-        delete m_markupText;
+    delete m_markupText;
     #endif //wxHAS_GENERIC_DATAVIEWCTRL
 #endif // SUPPORTS_MARKUP
 }
diff --git a/src/slic3r/GUI/GUI_Preview.cpp b/src/slic3r/GUI/GUI_Preview.cpp
index bca27fa21c5..36c1960d3f9 100644
--- a/src/slic3r/GUI/GUI_Preview.cpp
+++ b/src/slic3r/GUI/GUI_Preview.cpp
@@ -36,11 +36,8 @@ View3D::View3D(wxWindow* parent, Model* model, DynamicPrintConfig* config, Backg
 
 View3D::~View3D()
 {
-    if (m_canvas != nullptr)
-        delete m_canvas;
-
-    if (m_canvas_widget != nullptr)
-        delete m_canvas_widget;
+    delete m_canvas;
+    delete m_canvas_widget;
 }
 
 bool View3D::init(wxWindow* parent, Model* model, DynamicPrintConfig* config, BackgroundSlicingProcess* process)
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 80826eab91a..4d6b1178f9b 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -595,17 +595,10 @@ struct Sidebar::priv
 
 Sidebar::priv::~priv()
 {
-    if (object_manipulation != nullptr)
-        delete object_manipulation;
-
-    if (object_settings != nullptr)
-        delete object_settings;
-
-    if (frequently_changed_parameters != nullptr)
-        delete frequently_changed_parameters;
-
-    if (object_layers != nullptr)
-        delete object_layers;
+    delete object_manipulation;
+    delete object_settings;
+    delete frequently_changed_parameters;
+    delete object_layers;
 }
 
 void Sidebar::priv::show_preset_comboboxes()