diff --git a/tests/arrays.rs b/tests/arrays.rs
index 0c02977c..8da2f30d 100644
--- a/tests/arrays.rs
+++ b/tests/arrays.rs
@@ -184,6 +184,10 @@ fn test_arrays_map_reduce() -> Result<(), Box<EvalAltResult>> {
 
     assert_eq!(engine.eval::<INT>("[1].map(|x| x + 41)[0]")?, 42);
     assert_eq!(engine.eval::<INT>("([1].map(|x| x + 41))[0]")?, 42);
+    assert_eq!(
+        engine.eval::<INT>("let c = 40; let y = 1; [1].map(|x, i| c + x + y + i)[0]")?,
+        42
+    );
 
     assert_eq!(
         engine