diff --git a/clinotator/clinotator.py b/clinotator/clinotator.py
index 309495e..7e8eb31 100755
--- a/clinotator/clinotator.py
+++ b/clinotator/clinotator.py
@@ -188,4 +188,4 @@ def main():
     sys.exit()
 
 if __name__ == '__main__':
-    main()
\ No newline at end of file
+    main()
diff --git a/clinotator/global_vars.py b/clinotator/global_vars.py
index 41a6d97..a6e336a 100644
--- a/clinotator/global_vars.py
+++ b/clinotator/global_vars.py
@@ -94,3 +94,4 @@
                 ('Likely pathogenic', 8.4),
                 ('Pathogenic/Likely pathogenic', 15),
                 ('Pathogenic', 10000000)]
+
diff --git a/clinotator/variation.py b/clinotator/variation.py
index db316ff..4265822 100644
--- a/clinotator/variation.py
+++ b/clinotator/variation.py
@@ -228,7 +228,7 @@ def analysis_stats(self):
         
         if self.CVNA < 2:
             self.CTPS = None
-            self.CTRR = None
+            self.CTRR = "."
             return
         
         # logging.debug('CTRS score: {}'.format(self.CTRS))
@@ -254,7 +254,7 @@ def analysis_stats(self):
             logging.warning('ClinVar significance for {} does not include B,B/LB'
                          ',LB,US,LP,LP/P,P'.format(self.VID))
             self.CTPS = None
-            self.CTRR = None
+            self.CTRR = "."
             return
         
         self.CTRR = reclassification_tree(ctps_index, cvcs_index)