diff --git a/tools/ci_build/build.py b/tools/ci_build/build.py
index 1efc5c1f37..fa9d2e4597 100644
--- a/tools/ci_build/build.py
+++ b/tools/ci_build/build.py
@@ -2183,7 +2183,7 @@ def build_protoc_for_host(cmake_path, source_dir, build_dir, args):
         return None
     run_subprocess(
         [
-            "nuget.exe",
+            "nuget.exe" if is_windows() else "nuget",
             "restore",
             os.path.join(source_dir, "packages.config"),
             "-ConfigFile",