diff --git a/src/vm/mod.rs b/src/vm/mod.rs
index 4903ca0..3f709e0 100644
--- a/src/vm/mod.rs
+++ b/src/vm/mod.rs
@@ -558,9 +558,7 @@ impl<UserData: Clone> ClosureRunner<UserData> {
                         if let Some(global) = glob {
                             self.set_stack(*reg, StackValue::Value(global));
                         } else {
-                            return Err(RuntimeError::GlobalNotFound(
-                                constants.get(*global as usize).cloned(),
-                            ));
+                            self.set_stack(*reg, StackValue::Value(Value::Nil));
                         }
                     }
                 }