diff --git a/crates/swc_ecma_minifier/src/compress/optimize/iife.rs b/crates/swc_ecma_minifier/src/compress/optimize/iife.rs
index 2ea598c69811..fdc82e11237e 100644
--- a/crates/swc_ecma_minifier/src/compress/optimize/iife.rs
+++ b/crates/swc_ecma_minifier/src/compress/optimize/iife.rs
@@ -751,18 +751,6 @@ impl Optimizer<'_> {
             }
         }
 
-        // We should not add a variable to top level scope if the user has disabled it.
-        //
-        // See https://github.com/swc-project/swc/issues/8909
-        if !self.options.top_level() && self.ctx.in_top_level() {
-            for s in body.stmts.iter() {
-                if let Stmt::Decl(Decl::Var(..)) = s {
-                    log_abort!("iife: [x] Cannot inline because of top level scope");
-                    return false;
-                }
-            }
-        }
-
         if !body.stmts.iter().all(|stmt| match stmt {
             Stmt::Decl(Decl::Var(var))
                 if matches!(