diff --git a/lib/main.js b/lib/main.js
index cb1b667b..fdc7ea10 100644
--- a/lib/main.js
+++ b/lib/main.js
@@ -229,7 +229,7 @@ Lambda.prototype._fileCopy = function (program, src, dest, excludeNodeModules, c
     const options = {
       dereference: true, // same meaning as `-L` of `rsync` command
       filter: function (src, dest) {
-        if (!program.prebuiltDirectory && path.basename(src) == 'package.json') {
+        if (!program.prebuiltDirectory && src === path.join(srcAbsolutePath, 'package.json')) {
           // include package.json unless prebuiltDirectory is set
           return true;
         }
@@ -272,7 +272,7 @@ Lambda.prototype._rsync = function (program, src, dest, excludeNodeModules, call
     }
 
     // include package.json unless prebuiltDirectory is set
-    var includeArgs = program.prebuiltDirectory ? '' : '--include package.json ';
+    var includeArgs = program.prebuiltDirectory ? '' : '--include /package.json ';
 
     // we need the extra / after src to make sure we are copying the content
     // of the directory, not the directory itself.
diff --git a/test/main.js b/test/main.js
index e13913f5..6ce9b577 100644
--- a/test/main.js
+++ b/test/main.js
@@ -210,6 +210,7 @@ describe('node-lambda', function () {
       fs.mkdirsSync(path.join('__unittest', 'hoge'));
       fs.mkdirsSync(path.join('__unittest', 'fuga'));
       fs.writeFileSync(path.join('__unittest', 'hoge', 'piyo'));
+      fs.writeFileSync(path.join('__unittest', 'hoge', 'package.json'));
       fs.writeFileSync('fuga');
     });
     after(function () {