diff --git a/src/slic3r/GUI/ConfigExceptions.hpp b/src/slic3r/GUI/ConfigExceptions.hpp
index 181442d4e3..c0006166a4 100644
--- a/src/slic3r/GUI/ConfigExceptions.hpp
+++ b/src/slic3r/GUI/ConfigExceptions.hpp
@@ -1,4 +1,7 @@
 #include <exception> 
+
+#include "libslic3r/Exception.hpp"
+
 namespace Slic3r {
 
 class ConfigError : public Slic3r::RuntimeError { 
diff --git a/src/slic3r/GUI/GUI_AuxiliaryList.hpp b/src/slic3r/GUI/GUI_AuxiliaryList.hpp
index 8604259371..41ed4b5618 100644
--- a/src/slic3r/GUI/GUI_AuxiliaryList.hpp
+++ b/src/slic3r/GUI/GUI_AuxiliaryList.hpp
@@ -6,6 +6,7 @@
 #include <set>
 
 #include <wx/bitmap.h>
+#include <wx/button.h>
 #include <wx/dataview.h>
 #include <wx/menu.h>
 #include <wx/file.h>
diff --git a/src/slic3r/GUI/GUI_ObjectTableSettings.hpp b/src/slic3r/GUI/GUI_ObjectTableSettings.hpp
index 24e3d427a9..a247c8a41f 100644
--- a/src/slic3r/GUI/GUI_ObjectTableSettings.hpp
+++ b/src/slic3r/GUI/GUI_ObjectTableSettings.hpp
@@ -5,11 +5,13 @@
 #include <vector>
 #include <wx/panel.h>
 #include "wxExtensions.hpp"
+#include "libslic3r/PrintConfig.hpp"
 
 class wxBoxSizer;
 
 namespace Slic3r {
 class DynamicPrintConfig;
+class ModelObject;
 class ModelConfig;
 namespace GUI {
 class ConfigOptionsGroup;
diff --git a/src/slic3r/GUI/Gizmos/GizmoObjectManipulation.hpp b/src/slic3r/GUI/Gizmos/GizmoObjectManipulation.hpp
index 84ff8ebe62..79b5d7f215 100644
--- a/src/slic3r/GUI/Gizmos/GizmoObjectManipulation.hpp
+++ b/src/slic3r/GUI/Gizmos/GizmoObjectManipulation.hpp
@@ -6,6 +6,7 @@
 #include "libslic3r/Point.hpp"
 #include "libslic3r/Geometry.hpp"
 #include <float.h>
+#include <wx/string.h>
 
 #include "slic3r/GUI/GUI_Geometry.hpp"
 
@@ -14,6 +15,7 @@
 namespace Slic3r {
 namespace GUI {
 
+class ImGuiWrapper;
 class Selection;
 class GLCanvas3D;
 
diff --git a/src/slic3r/GUI/Jobs/PlaterWorker.hpp b/src/slic3r/GUI/Jobs/PlaterWorker.hpp
index f22bd6d511..93b20a4df5 100644
--- a/src/slic3r/GUI/Jobs/PlaterWorker.hpp
+++ b/src/slic3r/GUI/Jobs/PlaterWorker.hpp
@@ -7,7 +7,10 @@
 #include "Worker.hpp"
 #include "BusyCursorJob.hpp"
 
+#include <wx/app.h>
+
 #include "slic3r/GUI/GUI.hpp"
+#include "slic3r/GUI/GUI_Utils.hpp"
 #include "slic3r/GUI/I18N.hpp"
 
 namespace Slic3r { namespace GUI {
diff --git a/src/slic3r/GUI/PartSkipCommon.hpp b/src/slic3r/GUI/PartSkipCommon.hpp
index bd158edbf8..ae7ad6f6a5 100644
--- a/src/slic3r/GUI/PartSkipCommon.hpp
+++ b/src/slic3r/GUI/PartSkipCommon.hpp
@@ -1,6 +1,8 @@
 #ifndef PARTSKIPCOMMON_H
 #define PARTSKIPCOMMON_H
 
+#include <utility>
+#include <vector>
 
 namespace Slic3r { namespace GUI {
     
diff --git a/src/slic3r/GUI/Widgets/TextCtrl.h b/src/slic3r/GUI/Widgets/TextCtrl.h
index 3f3ab2b4de..2d57c38146 100644
--- a/src/slic3r/GUI/Widgets/TextCtrl.h
+++ b/src/slic3r/GUI/Widgets/TextCtrl.h
@@ -1,3 +1,5 @@
+#include <wx/textctrl.h>
+
 #ifdef __WXMSW__
 class TextCtrl : public wxTextCtrl
 {
diff --git a/src/slic3r/GUI/WipeTowerDialog.hpp b/src/slic3r/GUI/WipeTowerDialog.hpp
index 91944cfc78..a3eb2d3fb4 100644
--- a/src/slic3r/GUI/WipeTowerDialog.hpp
+++ b/src/slic3r/GUI/WipeTowerDialog.hpp
@@ -3,6 +3,7 @@
 
 #include <wx/dialog.h>
 #include <wx/webview.h>
+#include "libslic3r/FlushVolCalc.hpp"
 #include "libslic3r/PrintConfig.hpp"
 #include "Widgets/SpinInput.hpp"
 
diff --git a/tests/libnest2d/libnest2d_test_utils.hpp b/tests/libnest2d/libnest2d_test_utils.hpp
index f3513e36eb..b9f8510a8a 100644
--- a/tests/libnest2d/libnest2d_test_utils.hpp
+++ b/tests/libnest2d/libnest2d_test_utils.hpp
@@ -8,6 +8,7 @@
 // it here and include this header from every libnest2d test file.
 
 #include <cstdint>
+#include <iostream>
 
 #include "libnest2d/common.hpp"
 #include "libnest2d/geometry_traits_nfp.hpp"