diff --git a/README.md b/README.md
index 7255ce3f..3b302577 100644
--- a/README.md
+++ b/README.md
@@ -1471,8 +1471,8 @@ The following methods (defined in the [`BasicMapPackage`](#packages) but exclude
 | `remove`     | property name                       | removes a certain property and returns it ([`()`] if the property does not exist)                                                        |
 | `mixin`      | second object map                   | mixes in all the properties of the second object map to the first (values of properties with the same names replace the existing values) |
 | `+` operator | first object map, second object map | merges the first object map with the second                                                                                              |
-| `keys`       | _none_                              | returns an [array] of all the property names (in random order)                                                                           |
-| `values`     | _none_                              | returns an [array] of all the property values (in random order)                                                                          |
+| `keys`       | _none_                              | returns an [array] of all the property names (in random order), not available under [`no_index`]                                         |
+| `values`     | _none_                              | returns an [array] of all the property values (in random order), not available under [`no_index`]                                        |
 
 ### Examples
 
diff --git a/tests/arrays.rs b/tests/arrays.rs
index 60a41be4..ea710eba 100644
--- a/tests/arrays.rs
+++ b/tests/arrays.rs
@@ -13,6 +13,7 @@ fn test_arrays() -> Result<(), Box<EvalAltResult>> {
     );
     assert!(engine.eval::<bool>("let y = [1, 2, 3]; 2 in y")?);
 
+    #[cfg(not(feature = "no_object"))]
     assert_eq!(
         engine.eval::<INT>(
             r"
@@ -35,7 +36,7 @@ fn test_arrays() -> Result<(), Box<EvalAltResult>> {
             r"
                 let x = [1, 2, 3];
                 x += [4, 5];
-                x.len()
+                len(x)
            "
         )?,
         5
diff --git a/tests/for.rs b/tests/for.rs
index 081fddb9..2512ec72 100644
--- a/tests/for.rs
+++ b/tests/for.rs
@@ -31,6 +31,7 @@ fn test_for_array() -> Result<(), Box<EvalAltResult>> {
 }
 
 #[cfg(not(feature = "no_object"))]
+#[cfg(not(feature = "no_index"))]
 #[test]
 fn test_for_object() -> Result<(), Box<EvalAltResult>> {
     let engine = Engine::new();