diff --git a/otfmi/function_exporter.py b/otfmi/function_exporter.py
index 917a6e8..eb3dea2 100644
--- a/otfmi/function_exporter.py
+++ b/otfmi/function_exporter.py
@@ -447,8 +447,7 @@ def _build_cwrapper(self, verbose):
         """
         cmake_args = ["cmake", "."]
         if sys.platform.startswith("win"):
-            cmake_args.insert(1, "-DCMAKE_GENERATOR_PLATFORM=Win32")
-        print("workdir=", self.workdir)
+            cmake_args.insert(1, "-DCMAKE_GENERATOR_PLATFORM=x64")
         subprocess.run(
             cmake_args, capture_output=not verbose, cwd=self.workdir, check=True
         )