diff --git a/src/Handler/Utils/Servant/AVS.hs b/src/Handler/Utils/Servant/AVS.hs
index afcb50a4e..0e332bbac 100644
--- a/src/Handler/Utils/Servant/AVS.hs
+++ b/src/Handler/Utils/Servant/AVS.hs
@@ -25,7 +25,7 @@ instance Default AvsPersonQuery where
 deriveJSON defaultOptions
   { fieldLabelModifier = mconcat . drop 3 . splitCamel
   , omitNothingFields = True
-  , tagSingleConstructors = True
+  , tagSingleConstructors = False
   } ''AvsPersonQuery
             
 {-