diff --git a/zenmap/zenmapCore/NmapParser.py b/zenmap/zenmapCore/NmapParser.py
index d6b08fd..7010fa5 100644
--- a/zenmap/zenmapCore/NmapParser.py
+++ b/zenmap/zenmapCore/NmapParser.py
@@ -481,7 +481,7 @@ class ParserBasics(object):
                 }
 
         self.ops = NmapOptions()
-        self._nmap_output = StringIO()
+        self._nmap_output = []
 
     def set_xml_is_temp(self, xml_is_temp):
         # This flag is False if a user has specified his own -oX option - in
@@ -503,17 +503,13 @@ class ParserBasics(object):
         self.ops.target_specs = targets
 
     def get_nmap_output(self):
-        return self._nmap_output.getvalue()
+        return ''.join(self._nmap_output)
 
     def set_nmap_output(self, nmap_output):
-        self._nmap_output.close()
-        del self._nmap_output
-        self._nmap_output = StringIO()
-        self._nmap_output.write(nmap_output)
+        self._nmap_output = [nmap_output]
 
     def del_nmap_output(self):
-        self._nmap_output.close()
-        del _nmap_output
+        self._nmap_output = []
 
     def get_debugging_level(self):
         return self.nmap.get('debugging', '')
@@ -1069,7 +1065,7 @@ class NmapParserSAX(ParserBasics, ContentHandler):
 
     def characters(self, content):
         if self.in_interactive_output:
-            self._nmap_output.write(content)
+            self._nmap_output.append(content)
 
     def write_text(self, f):
         """Write the Nmap text output of this object to the file-like object