diff --git a/src/glsl/glsl_optimizer.cpp b/src/glsl/glsl_optimizer.cpp
index 24cc5339835..d83faa70a51 100644
--- a/src/glsl/glsl_optimizer.cpp
+++ b/src/glsl/glsl_optimizer.cpp
@@ -48,7 +48,7 @@ initialize_mesa_context(struct gl_context *ctx, glslopt_target api)
 	{
 	default:
 	case kGlslTargetOpenGL:
-		ctx->Const.GLSLVersion = 140;
+		ctx->Const.GLSLVersion = 150;
 		break;
 	case kGlslTargetOpenGLES20:
 		ctx->Extensions.OES_standard_derivatives = true;