diff --git a/Source/Tools/Flax.Build/Deps/Dependencies/glslang.cs b/Source/Tools/Flax.Build/Deps/Dependencies/glslang.cs
index e5f5e4dfe..e81733484 100644
--- a/Source/Tools/Flax.Build/Deps/Dependencies/glslang.cs
+++ b/Source/Tools/Flax.Build/Deps/Dependencies/glslang.cs
@@ -74,7 +74,7 @@ namespace Flax.Deps.Dependencies
             var root = options.IntermediateFolder;
             var installDir = Path.Combine(root, "install");
             var configuration = "Release";
-            var cmakeArgs = $"-DCMAKE_POLICY_VERSION_MINIMUM=3.5 -DCMAKE_INSTALL_PREFIX=\"{installDir}\" -DCMAKE_BUILD_TYPE={configuration} -DENABLE_RTTI=ON -DENABLE_CTEST=OFF -DENABLE_HLSL=ON -DENABLE_SPVREMAPPER=ON -DENABLE_GLSLANG_BINARIES=OFF";
+            var cmakeArgs = $"-DCMAKE_POLICY_VERSION_MINIMUM=3.5 -DCMAKE_INSTALL_PREFIX=\"{installDir}\" -DCMAKE_BUILD_TYPE={configuration} -DENABLE_RTTI=ON -DENABLE_CTEST=OFF -DENABLE_HLSL=ON -DENABLE_SPVREMAPPER=ON -DENABLE_GLSLANG_BINARIES=OFF -DENABLE_OPT=ON";
             var libsRoot = Path.Combine(installDir, "lib");
 
             // Get the source