diff --git a/wa/utils/postgres.py b/wa/utils/postgres.py
index 1bedbbc6..19a29f7a 100644
--- a/wa/utils/postgres.py
+++ b/wa/utils/postgres.py
@@ -199,7 +199,6 @@ def create_iterable_adapter(array_columns, explicit_iterate=False):
                     array_string = "{" + array_string + "}"
                     final_string = final_string + array_string + ","
                 final_string = final_string.strip(",")
-                final_string = "{" + final_string + "}"
             else:
                 # Simply return each item in the array
                 if explicit_iterate:
@@ -208,8 +207,7 @@ def create_iterable_adapter(array_columns, explicit_iterate=False):
                 else:
                     for item in param:
                         final_string = final_string + str(item) + ","
-                final_string = "{" + final_string + "}"
-        return AsIs("'{}'".format(final_string))
+        return AsIs("'{{{}}}'".format(final_string))
     return adapt_iterable