diff --git a/Mac/Modules/ae/AEmodule.c b/Mac/Modules/ae/AEmodule.c
index ebdb3e13d5c..5bb7f9c6784 100644
--- a/Mac/Modules/ae/AEmodule.c
+++ b/Mac/Modules/ae/AEmodule.c
@@ -1095,7 +1095,7 @@ static PyObject *AE_AECreateAppleEvent(_self, _args)
 	AEReturnID returnID;
 	AETransactionID transactionID;
 	AppleEvent result;
-	if (!PyArg_ParseTuple(_args, "O&O&O&hh",
+	if (!PyArg_ParseTuple(_args, "O&O&O&hl",
 	                      PyMac_GetOSType, &theAEEventClass,
 	                      PyMac_GetOSType, &theAEEventID,
 	                      AEDesc_Convert, &target,
diff --git a/Mac/Modules/ae/aesupport.py b/Mac/Modules/ae/aesupport.py
index d82496bfd40..3695037ec4d 100644
--- a/Mac/Modules/ae/aesupport.py
+++ b/Mac/Modules/ae/aesupport.py
@@ -12,7 +12,7 @@
 AESendPriority = Type("AESendPriority", "h")
 AEInteractAllowed = Type("AEInteractAllowed", "b")
 AEReturnID = Type("AEReturnID", "h")
-AETransactionID = Type("AETransactionID", "h")
+AETransactionID = Type("AETransactionID", "l")