diff --git a/dipper/sources/RGD.py b/dipper/sources/RGD.py
index <HASH>..<HASH> 100644
--- a/dipper/sources/RGD.py
+++ b/dipper/sources/RGD.py
@@ -80,7 +80,7 @@ class RGD(Source):
         """
         model = Model(self.graph)
 
-        record['relation']['id'] = self.resolve("has phenotype", mandatory=True)
+        record['relation']['id'] = self.resolve("has phenotype")
         # define the triple
         gene = record['subject']['id']
         relation = record['relation']['id']
switch the default to make resolve finding something mandatory