diff --git a/lib/main.js b/lib/main.js
index 7580f95f..8c6235be 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -201,7 +201,9 @@ Lambda.prototype._fileCopy = function (program, src, dest, excludeNodeModules, c
   })();
 
   const pattern = '{' + excludes.map(function (str) {
-    return path.join(srcAbsolutePath, str);
+    if (str.charAt(0) == '/')
+      return path.join(srcAbsolutePath, str);
+    return str;
   }).join(',') + '}'
 
   fs.mkdirs(dest, function (err) {
@@ -215,7 +217,7 @@ Lambda.prototype._fileCopy = function (program, src, dest, excludeNodeModules, c
           // include package.json unless prebuiltDirectory is set
           return true;
         }
-        return !minimatch(src, pattern);
+        return !minimatch(src, pattern, { matchBase: true });
       }
     };
     fs.copy(src, dest, options, function (err) {
diff --git a/test/main.js b/test/main.js
index 51a7c0a9..34e27d78 100644
--- a/test/main.js
+++ b/test/main.js
@@ -182,30 +182,30 @@ describe('node-lambda', function () {
     it(funcName + ' an index.js as well as other files', function (done) {
       lambda[funcName](program, '.', codeDirectory, true, function (err, result) {
         var contents = fs.readdirSync(codeDirectory);
-
-        result = _.includes(contents, 'index.js') &&
-                 _.includes(contents, 'package.json') &&
-                 !_.includes(contents, 'node_modules');
-        assert.isTrue(result);
-
+        ['index.js', 'package.json'].forEach(function (needle) {
+          assert.include(contents, needle, `Target: "${needle}"`);
+        });
+        ['node_modules'].forEach(function (needle) {
+          assert.notInclude(contents, needle, `Target: "${needle}"`);
+        });
         done();
       });
     });
 
     describe('when there are excluded files', function () {
       beforeEach(function (done) {
-        program.excludeGlobs = '*.png test';
+        // *main* => lib/main.js
+        // In case of specifying files under the directory with wildcards
+        program.excludeGlobs = '*.png test *main*';
         done();
       });
 
       it(funcName + ' an index.js as well as other files', function (done) {
         lambda[funcName](program, '.', codeDirectory, true, function (err, result) {
           var contents = fs.readdirSync(codeDirectory);
-
-          result = _.includes(contents, 'index.js') &&
-                   _.includes(contents, 'package.json');
-          assert.isTrue(result);
-
+          ['index.js', 'package.json'].forEach(function (needle) {
+            assert.include(contents, needle, `Target: "${needle}"`);
+          });
           done();
         });
       });
@@ -213,11 +213,11 @@ describe('node-lambda', function () {
       it(funcName + ' excludes files matching excludeGlobs', function (done) {
         lambda[funcName](program, '.', codeDirectory, true, function (err, result) {
           var contents = fs.readdirSync(codeDirectory);
-
-          result = _.includes(contents, 'node-lambda.png') &&
-                   _.includes(contents, 'test');
-          assert.isFalse(result);
-
+          ['node-lambda.png', 'test'].forEach(function (needle) {
+            assert.notInclude(contents, needle, `Target: "${needle}"`);
+          });
+          contents = fs.readdirSync(codeDirectory + '/lib');
+          assert.notInclude(contents, 'main.js', 'Target: "lib/main.js"');
           done();
         });
       });
@@ -226,9 +226,7 @@ describe('node-lambda', function () {
         program.excludeGlobs = '*.json';
         lambda[funcName](program, '.', codeDirectory, true, function(err, result) {
           var contents = fs.readdirSync(codeDirectory);
-          result = _.includes(contents, 'package.json');
-          assert.isTrue(result);
-
+          assert.include(contents, 'package.json');
           done();
         });
       });
@@ -247,10 +245,8 @@ describe('node-lambda', function () {
         program.prebuiltDirectory = path;
         lambda[funcName](program, path, codeDirectory, true, function(err, result) {
           var contents = fs.readdirSync(codeDirectory);
-          result = !_.includes(contents, 'package.json') &&
-                    _.includes(contents, 'testa');
-          assert.isTrue(result);
-
+          assert.notInclude(contents, 'package.json', 'Target: "packages.json"');
+          assert.include(contents, 'testa', 'Target: "testa"');
           done();
         });
       });