diff --git a/examples/OpenGLWindow/GLInstancingRenderer.cpp b/examples/OpenGLWindow/GLInstancingRenderer.cpp
index e60b94e9f..502088504 100644
--- a/examples/OpenGLWindow/GLInstancingRenderer.cpp
+++ b/examples/OpenGLWindow/GLInstancingRenderer.cpp
@@ -80,8 +80,8 @@ static const char* triangleVertexShaderText =
 "precision highp float;"
 "uniform mat4 MVP;\n"
 "uniform vec3 vCol;\n"
-"attribute vec4 vPos;\n"
-"attribute vec2 vUV;\n"
+"in vec4 vPos;\n"
+"in vec2 vUV;\n"
 "out vec3 clr;\n"
 "out vec2 uv0;\n"
 "void main()\n"