diff --git a/crates/script/src/tests_include.rs b/crates/script/src/tests_include.rs
index 3c7d1024..44ddfff8 100644
--- a/crates/script/src/tests_include.rs
+++ b/crates/script/src/tests_include.rs
@@ -39,7 +39,7 @@ fn includes_are_inlined_relative_to_the_script() {
     write(&dir.join("vendor/extra.jsx"), "var extra = 40;");
     write(
         &dir.join("main.jsx"),
-        "#target aftereffects\n#targetengine \"main\"\n#strict on\n//@include 'lib/math.jsx'\n#includepath \"vendor;lib\"\n#include \"extra.jsx\";\n#include \"util.jsxinc\"\n[twice(1) + extra, unit, $.fileName.split('/').pop()]",
+        "#target aftereffects\n#targetengine \"main\"\n#strict on\n//@include 'lib/math.jsx'\n#includepath \"vendor;lib\"\n#include \"extra.jsx\";\n#include \"util.jsxinc\"\n[twice(1) + extra, unit, $.fileName.split('\\\\').pop().split('/').pop()]",
     );
     let mut s = session();
     let o = run_file(&mut s, &dir.join("main.jsx"));