diff --git a/lib/nopt.js b/lib/nopt.js
index b9d068f..dbb2030 100644
--- a/lib/nopt.js
+++ b/lib/nopt.js
@@ -283,9 +283,15 @@ function parse (args, data, remain, types, shorthands) {
 
       if (abbrevs[arg]) arg = abbrevs[arg]
 
-      var isTypeArray = Array.isArray(types[arg])
-        , isArray = types[arg] === Array ||
-        isTypeArray && types[arg].indexOf(Array) !== -1
+      var argType = types[arg]
+      var isTypeArray = Array.isArray(argType)
+      if (isTypeArray && argType.length === 1) {
+        isTypeArray = false
+        argType = argType[0]
+      }
+
+      var isArray = argType === Array ||
+        isTypeArray && argType.indexOf(Array) !== -1
 
       // allow unknown things to be arrays if specified multiple times.
       if (!types.hasOwnProperty(arg) && data.hasOwnProperty(arg)) {
@@ -298,12 +304,12 @@ function parse (args, data, remain, types, shorthands) {
         , la = args[i + 1]
 
       var isBool = typeof no === 'boolean' ||
-        types[arg] === Boolean ||
-        isTypeArray && types[arg].indexOf(Boolean) !== -1 ||
-        (typeof types[arg] === 'undefined' && !hadEq) ||
+        argType === Boolean ||
+        isTypeArray && argType.indexOf(Boolean) !== -1 ||
+        (typeof argType === 'undefined' && !hadEq) ||
         (la === "false" &&
-         (types[arg] === null ||
-          isTypeArray && ~types[arg].indexOf(null)))
+         (argType === null ||
+          isTypeArray && ~argType.indexOf(null)))
 
       if (isBool) {
         // just set and move along
@@ -318,21 +324,21 @@ function parse (args, data, remain, types, shorthands) {
 
         // also support "foo":[Boolean, "bar"] and "--foo bar"
         if (isTypeArray && la) {
-          if (~types[arg].indexOf(la)) {
+          if (~argType.indexOf(la)) {
             // an explicit type
             val = la
             i ++
-          } else if ( la === "null" && ~types[arg].indexOf(null) ) {
+          } else if ( la === "null" && ~argType.indexOf(null) ) {
             // null allowed
             val = null
             i ++
           } else if ( !la.match(/^-{2,}[^-]/) &&
                       !isNaN(la) &&
-                      ~types[arg].indexOf(Number) ) {
+                      ~argType.indexOf(Number) ) {
             // number
             val = +la
             i ++
-          } else if ( !la.match(/^-[^-]/) && ~types[arg].indexOf(String) ) {
+          } else if ( !la.match(/^-[^-]/) && ~argType.indexOf(String) ) {
             // string
             val = la
             i ++
@@ -345,7 +351,7 @@ function parse (args, data, remain, types, shorthands) {
         continue
       }
 
-      if (types[arg] === String && la === undefined)
+      if (argType === String && la === undefined)
         la = ""
 
       if (la && la.match(/^-{2,}$/)) {
diff --git a/test/basic.js b/test/basic.js
index eb4857b..ec2ba26 100644
--- a/test/basic.js
+++ b/test/basic.js
@@ -15,6 +15,13 @@ test("Empty String results in empty string, not true", function (t) {
   t.end()
 })
 
+// https://github.com/npm/nopt/issues/66
+test("Empty String should not be true when type is single item Array", function (t) {
+  var parsed = nopt({	'foo': [String] }, {}, ["--foo"], 0)
+  t.same(parsed.foo, "")
+  t.end()
+})
+
 test("~ path is resolved to " + (isWin ? '%USERPROFILE%' : '$HOME'), function (t) {
   var path = require("path")
     , the