diff --git a/Lib/plat-mac/aetools.py b/Lib/plat-mac/aetools.py
index d181234..078b183 100644
--- a/Lib/plat-mac/aetools.py
+++ b/Lib/plat-mac/aetools.py
@@ -21,7 +21,6 @@
 """
 
 
-from types import *
 from Carbon import AE
 from Carbon import Evt
 from Carbon import AppleEvents
@@ -167,11 +166,11 @@
         self.target_signature = None
         if signature is None:
             signature = self._signature
-        if type(signature) == AEDescType:
+        if isinstance(signature, AEDescType):
             self.target = signature
         elif hasattr(signature, '__aepack__'):
             self.target = signature.__aepack__()
-        elif type(signature) == StringType and len(signature) == 4:
+        elif isinstance(signature, str) and len(signature) == 4:
             self.target = AE.AECreateDesc(AppleEvents.typeApplSignature, signature)
             self.target_signature = signature
         else:
diff --git a/Misc/ACKS b/Misc/ACKS
index 92606e3..a86f92e 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -524,6 +524,7 @@
 Brian Quinlan
 Anders Qvist
 Burton Radons
+Antti Rasinen
 Eric Raymond
 Edward K. Ream
 Marc Recht