diff --git a/bilby/gw/prior.py b/bilby/gw/prior.py
index 0907e49b6addf30dc77abb8008fa5f105a88bbad..2a1cff07c7868169b89e8f84d30beea5d52f27b3 100644
--- a/bilby/gw/prior.py
+++ b/bilby/gw/prior.py
@@ -1,7 +1,7 @@
 import os
 import numpy as np
 from scipy.interpolate import UnivariateSpline
-from ..core.prior import (PriorSet, Uniform, FromFile, Prior, DeltaFunction,
+from ..core.prior import (PriorDict, Uniform, FromFile, Prior, DeltaFunction,
                           Gaussian, Interped)
 from ..core.utils import logger
 
@@ -65,7 +65,7 @@ class AlignedSpin(Interped):
                           latex_label=latex_label, unit=unit)
 
 
-class BBHPriorSet(PriorSet):
+class BBHPriorDict(PriorDict):
     def __init__(self, dictionary=None, filename=None):
         """ Initialises a Prior set for Binary Black holes
 
@@ -82,7 +82,7 @@ class BBHPriorSet(PriorSet):
         elif filename is not None:
             if not os.path.isfile(filename):
                 filename = os.path.join(os.path.dirname(__file__), 'prior_files', filename)
-        PriorSet.__init__(self, dictionary=dictionary, filename=filename)
+        PriorDict.__init__(self, dictionary=dictionary, filename=filename)
 
     def test_redundancy(self, key):
         """
@@ -135,7 +135,15 @@ class BBHPriorSet(PriorSet):
         return redundant
 
 
-class BNSPriorSet(PriorSet):
+class BBHPriorSet(BBHPriorDict):
+
+    def __init__(self, dictionary=None, filename=None):
+        """ DEPRECATED: USE BBHPriorDict INSTEAD"""
+        logger.warning("The name 'BBHPriorSet' is deprecated use 'BBHPriorDict' instead")
+        super(BBHPriorSet, self).__init__(dictionary, filename)
+
+
+class BNSPriorDict(PriorDict):
 
     def __init__(self, dictionary=None, filename=None):
         """ Initialises a Prior set for Binary Neutron Stars
@@ -153,10 +161,10 @@ class BNSPriorSet(PriorSet):
         elif filename is not None:
             if not os.path.isfile(filename):
                 filename = os.path.join(os.path.dirname(__file__), 'prior_files', filename)
-        PriorSet.__init__(self, dictionary=dictionary, filename=filename)
+        PriorDict.__init__(self, dictionary=dictionary, filename=filename)
 
     def test_redundancy(self, key):
-        bbh_redundancy = BBHPriorSet().test_redundancy(key)
+        bbh_redundancy = BBHPriorDict().test_redundancy(key)
         if bbh_redundancy:
             return True
         redundant = False
@@ -174,6 +182,14 @@ class BNSPriorSet(PriorSet):
         return redundant
 
 
+class BNSPriorSet(BNSPriorDict):
+
+    def __init__(self, dictionary=None, filename=None):
+        """ DEPRECATED: USE BNSPriorDict INSTEAD"""
+        super(BNSPriorSet, self).__init__(dictionary, filename)
+        logger.warning("The name 'BNSPriorSet' is deprecated use 'BNSPriorDict' instead")
+
+
 Prior._default_latex_labels = {
     'mass_1': '$m_1$',
     'mass_2': '$m_2$',
@@ -203,7 +219,7 @@ Prior._default_latex_labels = {
     'delta_lambda': '$\\delta\\Lambda$'}
 
 
-class CalibrationPriorSet(PriorSet):
+class CalibrationPriorDict(PriorDict):
 
     def __init__(self, dictionary=None, filename=None):
         """ Initialises a Prior set for Binary Black holes
@@ -218,7 +234,7 @@ class CalibrationPriorSet(PriorSet):
         if dictionary is None and filename is not None:
             filename = os.path.join(os.path.dirname(__file__),
                                     'prior_files', filename)
-        PriorSet.__init__(self, dictionary=dictionary, filename=filename)
+        PriorDict.__init__(self, dictionary=dictionary, filename=filename)
         self.source = None
 
     def write_to_file(self, outdir, label):
@@ -233,7 +249,7 @@ class CalibrationPriorSet(PriorSet):
         label: str
             Label for prior.
         """
-        PriorSet.write_to_file(self, outdir=outdir, label=label)
+        PriorDict.write_to_file(self, outdir=outdir, label=label)
         if self.source is not None:
             prior_file = os.path.join(outdir, "{}.prior".format(label))
             with open(prior_file, "a") as outfile:
@@ -264,7 +280,7 @@ class CalibrationPriorSet(PriorSet):
 
         Returns
         -------
-        prior: PriorSet
+        prior: PriorDict
             Priors for the relevant parameters.
             This includes the frequencies of the nodes which are _not_ sampled.
         """
@@ -287,7 +303,7 @@ class CalibrationPriorSet(PriorSet):
         phase_sigma_nodes =\
             UnivariateSpline(frequency_array, phase_sigma)(nodes)
 
-        prior = CalibrationPriorSet()
+        prior = CalibrationPriorDict()
         for ii in range(n_nodes):
             name = "recalib_{}_amplitude_{}".format(label, ii)
             latex_label = "$A^{}_{}$".format(label, ii)
@@ -334,7 +350,7 @@ class CalibrationPriorSet(PriorSet):
 
         Returns
         -------
-        prior: PriorSet
+        prior: PriorDict
             Priors for the relevant parameters.
             This includes the frequencies of the nodes which are _not_ sampled.
         """
@@ -346,7 +362,7 @@ class CalibrationPriorSet(PriorSet):
         phase_mean_nodes = [0] * n_nodes
         phase_sigma_nodes = [phase_sigma] * n_nodes
 
-        prior = CalibrationPriorSet()
+        prior = CalibrationPriorDict()
         for ii in range(n_nodes):
             name = "recalib_{}_amplitude_{}".format(label, ii)
             latex_label = "$A^{}_{}$".format(label, ii)
@@ -366,3 +382,11 @@ class CalibrationPriorSet(PriorSet):
                                         latex_label=latex_label)
 
         return prior
+
+
+class CalibrationPriorSet(CalibrationPriorDict):
+
+    def __init__(self, dictionary=None, filename=None):
+        """ DEPRECATED: USE BNSPriorDict INSTEAD"""
+        super(CalibrationPriorSet, self).__init__(dictionary, filename)
+        logger.warning("The name 'CalibrationPriorSet' is deprecated use 'CalibrationPriorDict' instead")