diff --git a/bilby/core/prior.py b/bilby/core/prior.py
index 7378efc80b859fc365d5b9ee2c3190e688cee096..0cd8ff06d45ea8a15091230198be33eea1fac3d7 100644
--- a/bilby/core/prior.py
+++ b/bilby/core/prior.py
@@ -15,7 +15,7 @@ import bilby  # noqa
 import inspect
 
 
-class PriorSet(OrderedDict):
+class PriorDict(OrderedDict):
     def __init__(self, dictionary=None, filename=None):
         """ A set of priors
 
@@ -238,6 +238,14 @@ class PriorSet(OrderedDict):
         return False
 
 
+class PriorSet(PriorDict):
+
+    def __init__(self, dictionary=None, filename=None):
+        """ DEPRECATED: USE PriorDict INSTEAD"""
+        logger.warning("The name 'PriorSet' is deprecated use 'PriorDict' instead")
+        super(PriorSet, self).__init__(dictionary, filename)
+
+
 def create_default_prior(name, default_priors_file=None):
     """Make a default prior for a parameter with a known name.
 
@@ -261,7 +269,7 @@ def create_default_prior(name, default_priors_file=None):
             "No prior file given.")
         prior = None
     else:
-        default_priors = PriorSet(filename=default_priors_file)
+        default_priors = PriorDict(filename=default_priors_file)
         if name in default_priors.keys():
             prior = default_priors[name]
         else: