diff --git a/lib/galaxy/jobs/runners/sge.py b/lib/galaxy/jobs/runners/sge.py
index 0a006ace72e..2611514db9b 100644
--- a/lib/galaxy/jobs/runners/sge.py
+++ b/lib/galaxy/jobs/runners/sge.py
@@ -166,12 +166,11 @@ class SGEJobRunner( object ):
 
         script = sge_template % (job_wrapper.galaxy_lib_dir, os.path.abspath( job_wrapper.working_directory ), command_line)
         if self.app.config.set_metadata_externally:
-            output_fnames = [ str( o ) for o in job_wrapper.get_output_fnames() ]
             script += "cd %s\n" % os.path.abspath( os.getcwd() )
             script += "%s\n" % job_wrapper.setup_external_metadata( exec_dir = os.path.abspath( os.getcwd() ),
                                                                     tmp_dir = self.app.config.new_file_path,
                                                                     dataset_files_path = self.app.model.Dataset.file_path,
-                                                                    output_fnames = output_fnames,
+                                                                    output_fnames = job_wrapper.get_output_fnames(),
                                                                     set_extension = False,
                                                                     kwds = { 'overwrite' : False } ) #we don't want to overwrite metadata that was copied over in init_meta(), as per established behavior
         fh = file( jt.remoteCommand, "w" )