diff --git a/implementations/Crafter.Build-External.cpp b/implementations/Crafter.Build-External.cpp
index 9fb1903..e2a6e74 100644
--- a/implementations/Crafter.Build-External.cpp
+++ b/implementations/Crafter.Build-External.cpp
@@ -210,13 +210,7 @@ std::string ConfigureCMake(const fs::path& cloneDir, const fs::path& cmakeBuildD
 }
 
 std::string BuildCMake(const fs::path& cmakeBuildDir) {
-    // Without --parallel, the Unix Makefiles generator builds one translation
-    // unit at a time, leaving every core but one idle. Pass an explicit job
-    // count (a bare --parallel maps to an unbounded `make -j` fork bomb on the
-    // Makefiles generator) so deps like DPP/msquic/glslang compile ~N× faster.
-    unsigned jobs = std::max(1u, std::thread::hardware_concurrency());
-    std::string cmd = std::format("cmake --build {} --parallel {}",
-        ShellQuote(fs::absolute(cmakeBuildDir).string()), jobs);
+    std::string cmd = std::format("cmake --build {}", ShellQuote(fs::absolute(cmakeBuildDir).string()));
     CommandResult r = RunCommandChecked(cmd);
     if (r.exitCode != 0) {
         return std::format("cmake --build failed (exit {}): {}", r.exitCode, r.output);