diff --git a/Font Info/Find and Replace In Instance Parameters.py b/Font Info/Find and Replace In Instance Parameters.py
index 00ae038f..e99bd512 100644
--- a/Font Info/Find and Replace In Instance Parameters.py	
+++ b/Font Info/Find and Replace In Instance Parameters.py	
@@ -103,7 +103,7 @@ def FindAndReplaceInInstanceParametersMain(self, sender):
 					parameter = thisInstance.customParameters[parameterName]
 					if parameter is not None:
 						print(type(parameter))
-						if isinstance(parameter, (bool, objc._pythonify.OC_PythonInt)):
+						if isinstance(parameter, (bool, int)):
 							onOff = False
 							if replaceText.lower() in ("1", "yes", "on", "an", "ein", "ja", "true", "wahr"):
 								onOff = True