diff --git a/setup.py b/setup.py
index 57d80e39050553092471b38ba0ec7a1dbe764767..753f545be17d6b635b13279ac2063a52d1965f31 100644
--- a/setup.py
+++ b/setup.py
@@ -131,7 +131,7 @@ class CustomBuildExt(build_ext):
         # Combine all cmake commands into one string
         cmake_cmd = (
             f"source {env_script_path} && "
-            f"cmake -S {OPS_DIR} -B {BUILD_OPS_DIR}"
+            f" cmake -S {OPS_DIR} -B {BUILD_OPS_DIR}"
             f"  -DCMAKE_BUILD_TYPE=Release"
             f"  -DCMAKE_INSTALL_PREFIX={os.path.join(BUILD_OPS_DIR, 'install')}"
             f"  -DBUILD_EXTENSION_DIR={build_extension_dir}"