diff --git a/src/optimizer.rs b/src/optimizer.rs
index f4447556..124e7d95 100644
--- a/src/optimizer.rs
+++ b/src/optimizer.rs
@@ -841,11 +841,13 @@ fn optimize_stmt(stmt: &mut Stmt, state: &mut OptimizerState, preserve_result: b
         Stmt::Return(Some(ref mut expr), ..) => optimize_expr(expr, state, false),
 
         // Share nothing
+        #[cfg(not(feature = "no_closure"))]
         Stmt::Share(x) if x.is_empty() => {
             state.set_dirty();
             *stmt = Stmt::Noop(Position::NONE);
         }
         // Share constants
+        #[cfg(not(feature = "no_closure"))]
         Stmt::Share(x) => {
             let len = x.len();
             x.retain(|(v, _, _)| !state.find_constant(v).is_some());