diff --git a/Crafter.Build-ModuleFile.cpp b/Crafter.Build-ModuleFile.cpp
index 418c8f2..01f6fbe 100644
--- a/Crafter.Build-ModuleFile.cpp
+++ b/Crafter.Build-ModuleFile.cpp
@@ -198,7 +198,7 @@ void Module::Compile(std::string clangDir, const Configuration& config, fs::path
             });
         }
     }
-    threads2.emplace_back([this, &clangDir, &config, &pcmDir, &target, &march, &flags, &buildDir](){
+    threads2.emplace_back([this, &clangDir, &config, &pcmDir, &target, &march, &flags, &buildDir, &defines](){
         std::string command = std::format("{} {} -std={} {}.pcm -fprebuilt-module-path={} -c -O{} {} {} -o {}.o {}", clangDir, defines, config.standard, (pcmDir/path.filename()).generic_string(), pcmDir.generic_string(), config.optimizationLevel, march, flags, (buildDir/path.filename()).generic_string(), target);
         if(config.verbose) {
             std::cout << command << std::endl;