Fixed parenthesis.

Author: chrisgorgo

nipype/interfaces/fsl/preprocess.py

@@ -659,8 +659,8 @@ class FNIRTInputSpec(FSLCommandInputSpec):
                                           'to intensity mapping', hash_files=False)
     log_file = File(argstr='--logout=%s',
                              desc='Name of log-file', genfile=True, hash_files=False)
-    config_file = traits.Either(traits.Enum("T1_2_MNI152_2mm", "FA_2_FMRIB58_1mm"), File(exists=True, argstr='--config=%s',
-                       desc='Name of config file specifying command line arguments'))
+    config_file = traits.Either(traits.Enum("T1_2_MNI152_2mm", "FA_2_FMRIB58_1mm"), File(exists=True), argstr='--config=%s',
+                       desc='Name of config file specifying command line arguments')
     refmask_file = File(exists=True, argstr='--refmask=%s',
                         desc='name of file with mask in reference space')
     inmask_file = File(exists=True, argstr='--inmask=%s',