diff --git a/src/plugins/platforms/windows/qwindowseglcontext.cpp b/src/plugins/platforms/windows/qwindowseglcontext.cpp
index e27b55da3e..8892fa6daa 100644
--- a/src/plugins/platforms/windows/qwindowseglcontext.cpp
+++ b/src/plugins/platforms/windows/qwindowseglcontext.cpp
@@ -47,6 +47,7 @@
 #include <QtGui/QOpenGLContext>
 
 #if defined(QT_OPENGL_ES_2_ANGLE) || defined(QT_OPENGL_DYNAMIC)
+#  define EGL_EGLEXT_PROTOTYPES
 #  include <QtANGLE/EGL/eglext.h>
 #endif