diff --git a/tests/ma_build_tests_emscripten.bat b/tests/ma_build_tests_emscripten.bat
index 5fedabbc..942a27b6 100644
--- a/tests/ma_build_tests_emscripten.bat
+++ b/tests/ma_build_tests_emscripten.bat
@@ -1,2 +1,2 @@
-emcc ./ma_test_0.c -o ./bin/ma_test_0_emscripten.html -s WASM=0 -std=c99
-emcc ./ma_duplex.c -o ./bin/ma_duplex.html            -s WASM=0 -std=c99
\ No newline at end of file
+::emcc ./ma_test_0.c -o ./bin/ma_test_0_emscripten.html -s WASM=0 -Wall
+emcc ./ma_duplex.c -o ./bin/ma_duplex.html            -s WASM=0 -Wall
\ No newline at end of file