diff --git a/implementations/Crafter.Build-Project.cpp b/implementations/Crafter.Build-Project.cpp
index 3e8c84c..43ded3a 100644
--- a/implementations/Crafter.Build-Project.cpp
+++ b/implementations/Crafter.Build-Project.cpp
@@ -292,7 +292,7 @@ namespace Crafter {
         }
 
         #if defined(CRAFTER_BUILD_CONFIGURATION_TARGET_x86_64_pc_windows_msvc) || defined(CRAFTER_BUILD_CONFIGURATION_TARGET_x86_64_w64_mingw32)
-        command += "-D _CRT_SECURE_NO_WARNINGS";
+        command += " -D _CRT_SECURE_NO_WARNINGS";
         #endif
 
         command += std::format(" -fprebuilt-module-path={}", pcmDir.string());