diff --git a/librashader-runtime-d3d11/src/util.rs b/librashader-runtime-d3d11/src/util.rs
index 9deb561..4362b5e 100644
--- a/librashader-runtime-d3d11/src/util.rs
+++ b/librashader-runtime-d3d11/src/util.rs
@@ -2,9 +2,7 @@ use crate::error;
 use crate::error::assume_d3d11_init;
 use std::slice;
 use windows::core::PCSTR;
-use windows::Win32::Graphics::Direct3D::Fxc::{
-    D3DCompile, D3DCOMPILE_DEBUG, D3DCOMPILE_SKIP_OPTIMIZATION,
-};
+use windows::Win32::Graphics::Direct3D::Fxc::{D3DCompile, D3DCOMPILE_DEBUG, D3DCOMPILE_OPTIMIZATION_LEVEL3, D3DCOMPILE_SKIP_OPTIMIZATION};
 use windows::Win32::Graphics::Direct3D::ID3DBlob;
 use windows::Win32::Graphics::Direct3D11::*;
 use windows::Win32::Graphics::Dxgi::Common::*;
@@ -119,7 +117,7 @@ pub fn d3d_compile_shader(source: &[u8], entry: &[u8], version: &[u8]) -> error:
             if cfg!(feature = "debug-shader") {
                 D3DCOMPILE_DEBUG | D3DCOMPILE_SKIP_OPTIMIZATION
             } else {
-                0
+                D3DCOMPILE_OPTIMIZATION_LEVEL3
             },
             0,
             &mut blob,