check index out of bounds correctly

1 files changed, 1 insertions, 1 deletions

diff --git a/src/vm.rs b/src/vm.rs
index 6b69b3c..1e04673 100644
--- a/src/vm.rs
+++ b/src/vm.rs
@@ -296,7 +296,7 @@ impl VM {
                 match (val, slot) {
                     (Value::Tuple(v), Value::Int(slot)) => {
                         let slot = slot as usize;
-                        if v.len() < slot {
+                        if v.len() <= slot {
                             self.stack.push(Value::Nil);
                             let len = v.len();
                             error!(self, ErrorKind::IndexOutOfBounds(Value::Tuple(v), len, slot));