diff --git a/crates/haku/src/vm.rs b/crates/haku/src/vm.rs
index 3bb96f9..70b9293 100644
--- a/crates/haku/src/vm.rs
+++ b/crates/haku/src/vm.rs
@@ -210,6 +210,7 @@ impl Vm {
                 .checked_sub(1)
                 .ok_or_else(|| self.create_exception("code ran for too long"))?;
 
+            #[allow(unused)]
             let pc2 = pc;
             let opcode = chunk.read_opcode(&mut pc)?;
             vmtrace!("{pc2:2} {opcode:?}");
@@ -245,7 +246,7 @@ impl Vm {
                 Opcode::SetLocal => {
                     let index = chunk.read_u8(&mut pc)? as usize;
                     let new_value = self.pop()?;
-                    *self.get_mut(index)? = new_value;
+                    *self.get_mut(bottom + index)? = new_value;
                 }
 
                 Opcode::Capture => {
diff --git a/crates/haku/tests/language.rs b/crates/haku/tests/language.rs
index ba1501e..5b979bf 100644
--- a/crates/haku/tests/language.rs
+++ b/crates/haku/tests/language.rs
@@ -266,3 +266,18 @@ fn system_arithmetic() {
     expect_number("1 + 2 + 3 + 4", 10.0, 0.0001);
     expect_number("(2 * 1) + 1 + (6 / 2) + (10 - 3)", 13.0, 0.0001);
 }
+
+#[test]
+fn issue_78() {
+    let code = r#"
+        f = \_ ->
+            let x = 1
+            x + x
+
+        [
+            f ()
+            f ()
+        ]
+    "#;
+    assert_eq!(eval(code).unwrap(), Value::Ref(RefId::from_u32(2)))
+}