diff --git a/Apps/MAPL_GridCompSpecs_ACG.py b/Apps/MAPL_GridCompSpecs_ACG.py
index 597665d2bb00..13d113da3787 100755
--- a/Apps/MAPL_GridCompSpecs_ACG.py
+++ b/Apps/MAPL_GridCompSpecs_ACG.py
@@ -4,7 +4,6 @@
 import os
 import csv
 from collections import namedtuple
-from collections.abc import Sequence
 import operator
 from functools import partial
 
@@ -47,7 +46,7 @@ def make_entry_emit(dictionary):
 
 def mangle_name_prefix(name, parameters = None):
     pre = 'comp_name'
-    if isinstance(parameters, Sequence):
+    if isinstance(parameters, tuple):
         pre = parameters[0] if parameters[0] else pre
     codestring = f"'//trim({pre})//'" 
     return string_emit(name.replace("*",codestring)) if name else None
@@ -105,7 +104,7 @@ def __init__(self, emit, *parameter_keys):
         self.parameter_keys = parameter_keys
         
     def __call__(self, name, parameters):
-        parameter_values = (parameters.get(key) for key in self.parameter_keys)
+        parameter_values = tuple(parameters.get(key) for key in self.parameter_keys)
         return self.emit(name, parameter_values)