diff --git a/src/build.py b/src/build.py
index 57ed5c2..a7d87ea 100755
--- a/src/build.py
+++ b/src/build.py
@@ -948,7 +948,7 @@ def Jsc():
     command = ['xcrun', PREBUILT_CMAKE_BIN, '-Wno-dev',
                '..', '-G', 'Ninja',
                '-DCMAKE_BUILD_TYPE="Release"',
-               '-DPORT=Mac',
+               '-DPORT=JSCOnly',
                '-DENABLE_WEBASSEMBLY=ON']
 
     command.extend(OverrideCMakeCompiler())