diff --git a/lib/node-import-map-loader.js b/lib/node-import-map-loader.js
index 16ed59c..bd58e78 100644
--- a/lib/node-import-map-loader.js
+++ b/lib/node-import-map-loader.js
@@ -11,13 +11,8 @@ export async function resolve(specifier, context, defaultResolve) {
   const { parentURL = null } = context;
   const importMap = await importMapPromise;
   const importMapUrl = resolveSpecifier(importMap, specifier, parentURL);
-  if (importMapUrl) {
-    return {
-      url: importMapUrl,
-    };
-  } else {
-    return defaultResolve(specifier, context, defaultResolve);
-  }
+
+  return defaultResolve(importMapUrl ?? specifier, context, defaultResolve);
 }
 
 async function getImportMapPromise() {