diff --git a/src/renderer_gl.cpp b/src/renderer_gl.cpp
index 8285bfdea..6d4dc5571 100644
--- a/src/renderer_gl.cpp
+++ b/src/renderer_gl.cpp
@@ -721,6 +721,7 @@ namespace bgfx
 		"usampler3D",
 		"isamplerCube",
 		"usamplerCube",
+		NULL
 	};
 
 	static void GL_APIENTRY stubVertexAttribDivisor(GLuint /*_index*/, GLuint /*_divisor*/)