diff --git a/src/appleseed.studio/mainwindow/rendering/lightpathswidget.cpp b/src/appleseed.studio/mainwindow/rendering/lightpathswidget.cpp
index df2dcac4f8..f5c6762f6b 100644
--- a/src/appleseed.studio/mainwindow/rendering/lightpathswidget.cpp
+++ b/src/appleseed.studio/mainwindow/rendering/lightpathswidget.cpp
@@ -55,6 +55,11 @@
 #include <algorithm>
 #include <string>
 
+// Platform headers.
+#ifdef __APPLE__
+#include <GLKit/GLKMatrix4.h>
+#endif
+
 using namespace foundation;
 using namespace renderer;
 using namespace std;
@@ -265,11 +270,21 @@ void LightPathsWidget::paintGL()
 
     glMatrixMode(GL_PROJECTION);
     glLoadIdentity();
+#ifdef __APPLE__
+    glMultMatrixf(
+        GLKMatrix4MakePerspective(
+            rc.m_hfov / rc.m_aspect_ratio,
+            rc.m_aspect_ratio,
+            0.01,
+            1000.0
+        ).m);
+#else
     gluPerspective(
         rad_to_deg(rc.m_hfov) / rc.m_aspect_ratio,
         rc.m_aspect_ratio,
         0.01,
         1000.0);
+#endif
 
     glMatrixMode(GL_MODELVIEW);
     glLoadIdentity();
diff --git a/src/appleseed.studio/mainwindow/rendering/lightpathswidget.h b/src/appleseed.studio/mainwindow/rendering/lightpathswidget.h
index 7a7d753737..27d9aa0679 100644
--- a/src/appleseed.studio/mainwindow/rendering/lightpathswidget.h
+++ b/src/appleseed.studio/mainwindow/rendering/lightpathswidget.h
@@ -96,7 +96,7 @@ class LightPathsWidget
     void initializeGL() override;
     void resizeGL(int w, int h) override;
     void paintGL() override;
-    void keyPressEvent(QKeyEvent* event);
+    void keyPressEvent(QKeyEvent* event) override;
 
     void render_geometry() const;
     void render_light_paths() const;