diff --git a/rowers/models.py b/rowers/models.py
index 79172b05..fb346d1c 100644
--- a/rowers/models.py
+++ b/rowers/models.py
@@ -109,7 +109,7 @@ class Rower(models.Model):
                                           'Pwr UT1',
                                           'Pwr AT',
                                           'Pwr TR',
-                                          Pwr 'AN'])
+                                          'Pwr AN'])
     
     c2token = models.CharField(default='',max_length=200,blank=True,null=True)
     tokenexpirydate = models.DateTimeField(blank=True,null=True)