diff --git a/.gitignore b/.gitignore
index 8632f89..dcd7bad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,9 @@
 .project
 .buildpath
 
+# phpstorm files
+.idea
+
 # doxygen files
 doc/html
 doc/latex
diff --git a/src/Mike42/Escpos/PrintConnectors/DummyPrintConnector.php b/src/Mike42/Escpos/PrintConnectors/DummyPrintConnector.php
index 9b27605..1154b6c 100644
--- a/src/Mike42/Escpos/PrintConnectors/DummyPrintConnector.php
+++ b/src/Mike42/Escpos/PrintConnectors/DummyPrintConnector.php
@@ -62,7 +62,7 @@ public function finalize()
      */
     public function getData()
     {
-        return implode($this -> buffer);
+        return implode('', $this -> buffer);
     }
 
     /**