diff --git a/src/eval.rs b/src/eval.rs
index c7ce51a83f4..5d8d332fcd9 100644
--- a/src/eval.rs
+++ b/src/eval.rs
@@ -443,8 +443,8 @@ mod tests {
     fn windows_argv0_no_escape() {
         // Ensure that a trailing backslash in argv[0] is not escaped.
         let cmd = String::from_utf16_lossy(&args_to_utf16_command_string(
-            [r"C:\Program Files\", "arg1"].iter(),
+            [r"C:\Program Files\", "arg1", "arg 2", "arg \" 3"].iter(),
         ));
-        assert_eq!(cmd.trim_end_matches("\0"), r#""C:\Program Files\" arg1"#);
+        assert_eq!(cmd.trim_end_matches("\0"), r#""C:\Program Files\" arg1 "arg 2" "arg \" 3""#);
     }
 }
diff --git a/test-cargo-miri/run-test.py b/test-cargo-miri/run-test.py
index 3bc37b236b3..18671b2e29d 100755
--- a/test-cargo-miri/run-test.py
+++ b/test-cargo-miri/run-test.py
@@ -94,7 +94,7 @@ def test_cargo_miri_run():
                                          # so keep it set
     )
     test("`cargo miri run` (with arguments and target)",
-        cargo_miri("run") + ["--bin", "cargo-miri-test", "--", "hello world", '"hello world"'],
+        cargo_miri("run") + ["--bin", "cargo-miri-test", "--", "hello world", '"hello world"', r'he\\llo\"world'],
         "run.args.stdout.ref", "run.args.stderr.ref",
     )
     test("`cargo miri r` (subcrate, no isolation)",
diff --git a/test-cargo-miri/run.args.stderr.ref b/test-cargo-miri/run.args.stderr.ref
index 8226b1b7cde..01bb8952322 100644
--- a/test-cargo-miri/run.args.stderr.ref
+++ b/test-cargo-miri/run.args.stderr.ref
@@ -1,3 +1,4 @@
 main
 hello world
 "hello world"
+he\\llo\"world