diff --git a/src/storage/caas.js b/src/storage/caas.js
index 9bd1de4dc..89d15a63f 100644
--- a/src/storage/caas.js
+++ b/src/storage/caas.js
@@ -95,7 +95,7 @@ function backup(apiConfig, backupId, sourceDir, callback) {
             callback(null);
         });
 
-        targz.create([{ source: sourceDir, destination: '.' }], apiConfig.key || null, passThrough, callback);
+        targz.create(sourceDir, apiConfig.key || null, passThrough, callback);
     });
 }
 
diff --git a/src/storage/filesystem.js b/src/storage/filesystem.js
index 60f589052..683385ec2 100644
--- a/src/storage/filesystem.js
+++ b/src/storage/filesystem.js
@@ -69,7 +69,7 @@ function backup(apiConfig, backupId, sourceDir, callback) {
             callback(null);
         });
 
-        targz.create([{ source: sourceDir, destination: '.' }], apiConfig.key || null, fileStream, callback);
+        targz.create(sourceDir, apiConfig.key || null, fileStream, callback);
     });
 }
 
diff --git a/src/storage/s3.js b/src/storage/s3.js
index a100278b5..52a3184d7 100644
--- a/src/storage/s3.js
+++ b/src/storage/s3.js
@@ -100,7 +100,7 @@ function backup(apiConfig, backupId, sourceDir, callback) {
             callback(null);
         });
 
-        targz.create([{ source: sourceDir, destination: '.' }], apiConfig.key || null, passThrough, callback);
+        targz.create(sourceDir, apiConfig.key || null, passThrough, callback);
     });
 }
 
diff --git a/src/storage/targz.js b/src/storage/targz.js
index a04af056c..8a03c2eef 100644
--- a/src/storage/targz.js
+++ b/src/storage/targz.js
@@ -14,18 +14,16 @@ var assert = require('assert'),
     tar = require('tar-fs'),
     zlib = require('zlib');
 
-function create(sourceDirectories, key, outStream, callback) {
-    assert(Array.isArray(sourceDirectories));
+function create(sourceDir, key, outStream, callback) {
+    assert.strictEqual(typeof sourceDir, 'string');
     assert(key === null || typeof key === 'string');
     assert.strictEqual(typeof callback, 'function');
 
     var pack = tar.pack('/', {
         dereference: false, // pack the symlink and not what it points to
-        entries: sourceDirectories.map(function (m) { return m.source; }),
+        entries: [ sourceDir ],
         map: function(header) {
-            sourceDirectories.forEach(function (m) {
-                header.name = header.name.replace(new RegExp('^' + m.source + '(/?)'), m.destination + '$1');
-            });
+            header.name = header.name.replace(new RegExp('^' + sourceDir + '(/?)'), '.$1'); // make paths relative
             return header;
         },
         strict: false // do not error for unknown types (skip fifo, char/block devices)