diff --git a/tools/run_tests/helper_scripts/build_node.bat b/tools/run_tests/helper_scripts/build_node.bat
index 233dacd3fb0..7a67769516f 100644
--- a/tools/run_tests/helper_scripts/build_node.bat
+++ b/tools/run_tests/helper_scripts/build_node.bat
@@ -41,4 +41,4 @@ for /f "delims=v" %%v in ('node --version') do (
 
 
 @rem rebuild, because it probably failed the first time
-call npm install --build-from-source %1 %2
+call npm install --build-from-source %*