diff --git a/mriqc/__about__.py b/mriqc/__about__.py
index ad530b202..e8470b760 100644
--- a/mriqc/__about__.py
+++ b/mriqc/__about__.py
@@ -71,7 +71,7 @@
     'nipy',
     'statsmodels',
     'versioneer',
-    'xvfbwrapper'
+    'xvfbwrapper',
 ]
 
 LINKS_REQUIRES = [
diff --git a/mriqc/workflows/utils.py b/mriqc/workflows/utils.py
index 75948bcc7..08c39f7ab 100644
--- a/mriqc/workflows/utils.py
+++ b/mriqc/workflows/utils.py
@@ -166,12 +166,9 @@ def slice_wise_fft(in_file, ftmask=None, spike_thres=3., out_prefix=None):
 def get_fwhmx():
     fwhm_args = {"combine": True,
                  "detrend": True}
-    afni_version_tpl = afni.Info.version()
-    afni_version = StrictVersion(".".join([str(afni_version_tpl[0]),
-                                           str(afni_version_tpl[1]),
-                                           str(afni_version_tpl[2])]))
+    afni_version = StrictVersion('%s.%s.%s' % afni.Info.version())
     if afni_version >= StrictVersion("2017.2.3"):
         fwhm_args['args'] = '-ShowMeClassicFWHM'
         fwhm_args['acf'] = True
     fwhm_interface = afni.FWHMx(**fwhm_args)
-    return fwhm_interface
\ No newline at end of file
+    return fwhm_interface