diff --git a/lib/module.js b/lib/module.js
index b0744ff54c..142c7b7b85 100755
--- a/lib/module.js
+++ b/lib/module.js
@@ -85,28 +85,27 @@ class Module {
     // Allows passing runtime options to each module
     const options = moduleOpts.options || {}
     const originalSrc = moduleOpts.src || moduleOpts
-    let src = originalSrc
     // Resolve module
-    let module
+    let module = originalSrc
     try {
-      if (typeof src === 'string') {
+      if (typeof module === 'string') {
         // Using ~ or ./ shorthand modules are resolved from project srcDir
-        if (src.indexOf('~') === 0 || src.indexOf('./') === 0) {
-          src = path.join(this.options.srcDir, src.substr(1))
+        if (module.indexOf('~') === 0 || module.indexOf('./') === 0) {
+          module = path.join(this.options.srcDir, module.substr(1))
         }
         // eslint-disable-next-line no-eval
-        module = eval('require')(src)
+        module = eval('require')(module)
       }
     } catch (e) /* istanbul ignore next */ {
       // eslint-disable-next-line no-console
-      console.error('[nuxt] Unable to resolve module', src)
+      console.error('[nuxt] Unable to resolve module', module)
       // eslint-disable-next-line no-console
       console.error(e)
       process.exit(0)
     }
     // Validate module
     /* istanbul ignore if */
-    if (!(module instanceof Function)) {
+    if (typeof module !== 'function') {
       // eslint-disable-next-line no-console
       console.error(`[nuxt] Module [${originalSrc}] should export a function`)
       process.exit(1)