diff --git a/emcc.zig b/emcc.zig
index d25de4c..bbd98e3 100644
--- a/emcc.zig
+++ b/emcc.zig
@@ -119,6 +119,7 @@ pub fn linkWithEmscripten(
         "-sUSE_GLFW=3",
         "-sASYNCIFY",
         "-O3",
+        "-fsanitize=undefined",
         "--emrun",
     });
     return emcc_command;