diff --git a/source/Irrlicht/OpenGL3/Driver.cpp b/source/Irrlicht/OpenGL3/Driver.cpp
index 0926e74..7f63a45 100644
--- a/source/Irrlicht/OpenGL3/Driver.cpp
+++ b/source/Irrlicht/OpenGL3/Driver.cpp
@@ -3,6 +3,7 @@
 // For conditions of distribution and use, see copyright notice in Irrlicht.h
 
 #include "Driver.h"
+#include <cassert>
 
 namespace irr {
 namespace video {
diff --git a/source/Irrlicht/OpenGLES2/Driver.cpp b/source/Irrlicht/OpenGLES2/Driver.cpp
index 4293d95..714a9da 100644
--- a/source/Irrlicht/OpenGLES2/Driver.cpp
+++ b/source/Irrlicht/OpenGLES2/Driver.cpp
@@ -3,6 +3,7 @@
 // For conditions of distribution and use, see copyright notice in Irrlicht.h
 
 #include "Driver.h"
+#include <cassert>
 
 namespace irr {
 namespace video {