diff --git a/src/utils.rs b/src/utils.rs
index 473836e..18f6bdd 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -67,6 +67,6 @@ impl VariableDeclarationStack
 	pub fn pop(&mut self) -> Result<(), crate::Error>
 	{
 		self.bound_variable_declaration_stack.pop().map(|_| ())
-			.ok_or(crate::Error::new_logic("variable stack not in expected state"))
+			.ok_or_else(|| crate::Error::new_logic("variable stack not in expected state"))
 	}
 }