diff --git a/builder.py b/builder.py
index 85344198..530bcc7e 100644
--- a/builder.py
+++ b/builder.py
@@ -61,12 +61,12 @@ class ExtensionBuilder(build_ext):
         build_args = ["--config", cfg]
         install_args = ["--config", cfg]
 
+        cmake_args += ["-DCMAKE_BUILD_TYPE=" + cfg]
         if platform.system() == "Windows":
             if sys.maxsize > 2 ** 32:
                 cmake_args += ["-A", "x64"]
             build_args += ["--", "/m"]
         else:
-            cmake_args += ["-DCMAKE_BUILD_TYPE=" + cfg]
             build_args += ["--", "-j4", "VERBOSE=1"]
 
         env = os.environ.copy()