diff --git a/application/sources/cut_face_preview.cc b/application/sources/cut_face_preview.cc
index 25ded7a4..7df79464 100644
--- a/application/sources/cut_face_preview.cc
+++ b/application/sources/cut_face_preview.cc
@@ -1,4 +1,5 @@
 #include <QPainter>
+#include <QPainterPath>
 #include "cut_face_preview.h"
 #include "theme.h"
 
diff --git a/application/sources/material_previews_generator.cc b/application/sources/material_previews_generator.cc
index 2231193a..dd1949fe 100644
--- a/application/sources/material_previews_generator.cc
+++ b/application/sources/material_previews_generator.cc
@@ -1,6 +1,6 @@
 #include <QGuiApplication>
 #include <QElapsedTimer>
-#include <qDebug>
+#include <QDebug>
 #include <QFile>
 #include <dust3d/base/ds3_file.h>
 #include <dust3d/base/snapshot_xml.h>
diff --git a/dust3d/base/cut_face.cc b/dust3d/base/cut_face.cc
index 4b4e230d..db5c5787 100644
--- a/dust3d/base/cut_face.cc
+++ b/dust3d/base/cut_face.cc
@@ -20,6 +20,7 @@
  *  SOFTWARE.
  */
 
+#include <algorithm>    // std::reverse
 #include <dust3d/base/vector2.h>
 #include <dust3d/base/vector3.h>
 #include <dust3d/base/cut_face.h>
diff --git a/dust3d/base/ds3_file.cc b/dust3d/base/ds3_file.cc
index ea7d6d03..eec89e80 100644
--- a/dust3d/base/ds3_file.cc
+++ b/dust3d/base/ds3_file.cc
@@ -20,6 +20,7 @@
  *  SOFTWARE.
  */
 
+#include <cstring>
 #include <fstream>
 #include <iostream>
 #include <rapidxml.hpp>
diff --git a/dust3d/base/matrix4x4.h b/dust3d/base/matrix4x4.h
index 894ecd33..1029de06 100644
--- a/dust3d/base/matrix4x4.h
+++ b/dust3d/base/matrix4x4.h
@@ -23,6 +23,7 @@
 #ifndef DUST3D_BASE_MATRIX4X4_H_
 #define DUST3D_BASE_MATRIX4X4_H_
 
+#include <cstring>
 #include <memory>
 #include <dust3d/base/vector3.h>
 #include <dust3d/base/quaternion.h>
diff --git a/dust3d/base/quaternion.h b/dust3d/base/quaternion.h
index e8f42799..30c5e68d 100644
--- a/dust3d/base/quaternion.h
+++ b/dust3d/base/quaternion.h
@@ -71,7 +71,7 @@ public:
         return m_data[0];
     }
     
-    inline Quaternion &Quaternion::operator*=(const double &number) 
+    inline Quaternion &operator*=(const double &number) 
     {
         m_data[0] *= number;
         m_data[1] *= number;
diff --git a/dust3d/base/vector2.h b/dust3d/base/vector2.h
index 2d1d0ef4..83933979 100644
--- a/dust3d/base/vector2.h
+++ b/dust3d/base/vector2.h
@@ -38,6 +38,7 @@
 
 #include <vector>
 #include <string>
+#include <iostream>
 #include <dust3d/base/math.h>
 
 namespace dust3d