diff --git a/src/compiler.rs b/src/compiler.rs
index eeb5caf..303b748 100644
--- a/src/compiler.rs
+++ b/src/compiler.rs
@@ -707,9 +707,10 @@ impl StmtVisitor for Compiler {
         // TODO - maybe this would be smarter to set up in the AST. I'm 99% sure that the last
         // object created, if it were a function object, will be what we're assigning it to, but I
         // want to be 100% sure instead of 99%.
-        let obj = self.constants.last().unwrap().as_ref();
-        if let Some(fun) = obj.borrow_mut().as_any_mut().downcast_mut::<UserFunction>() {
-            fun.set_name(Rc::new(name.to_string()));
+        if let Some(obj) = self.constants.last() {
+            if let Some(fun) = obj.borrow_mut().as_any_mut().downcast_mut::<UserFunction>() {
+                fun.set_name(Rc::new(name.to_string()));
+            }
         }
 
         Ok(())