diff --git a/mozglue/dllservices/gen_dll_blocklist_defs.py b/mozglue/dllservices/gen_dll_blocklist_defs.py
index d55de948ad5f..ecda2baa13df 100644
--- a/mozglue/dllservices/gen_dll_blocklist_defs.py
+++ b/mozglue/dllservices/gen_dll_blocklist_defs.py
@@ -278,9 +278,7 @@ class BlocklistDescriptor(object):
 
         # Sort the list on entry name so that the blocklist code may use
         # binary search if it so chooses.
-        filtered_list.sort(key=lambda e: e.get_name())
-
-        return filtered_list
+        return sorted(filtered_list, key=lambda e: e.get_name())
 
     @staticmethod
     def get_fd(outspec_leaf_name):
@@ -371,11 +369,7 @@ GENERATED_BLOCKLIST_FILES = [
 
 class PETimeStamp(object):
     def __init__(self, ts):
-        # Since we can't specify the long literal suffix in python 3, we'll
-        # compute max_timestamp this way to ensure that it is defined as a
-        # long in python 2
-        max_timestamp = (long(2) ** 32) - 1
-        assert isinstance(max_timestamp, long)
+        max_timestamp = (2 ** 32) - 1
         if ts < 0 or ts > max_timestamp:
             raise ValueError('Invalid timestamp value')
         self._value = ts
@@ -413,7 +407,7 @@ class Version(object):
             elif isinstance(args[0], PETimeStamp):
                 self._ver = args[0]
             else:
-                self._ver = long(args[0])
+                self._ver = int(args[0])
         elif len(args) == 4:
             self.validate_iterable(args)
 
@@ -433,14 +427,14 @@ class Version(object):
 
     def build_long(self, args):
         self.validate_iterable(args)
-        return (long(args[0]) << 48) | (long(args[1]) << 32) | \
-            (long(args[2]) << 16) | long(args[3])
+        return (int(args[0]) << 48) | (int(args[1]) << 32) | \
+            (int(args[2]) << 16) | int(args[3])
 
     def is_timestamp(self):
         return isinstance(self._ver, PETimeStamp)
 
     def __str__(self):
-        if isinstance(self._ver, long):
+        if isinstance(self._ver, int):
             if self._ver == Version.ALL_VERSIONS:
                 return 'DllBlockInfo::ALL_VERSIONS'
 
diff --git a/mozglue/dllservices/moz.build b/mozglue/dllservices/moz.build
index 3cafc915e361..ba73d8c7ef1c 100644
--- a/mozglue/dllservices/moz.build
+++ b/mozglue/dllservices/moz.build
@@ -53,7 +53,6 @@ GENERATED_FILES += [
 blocklist_defs = GENERATED_FILES[blocklist_files]
 blocklist_defs.script = 'gen_dll_blocklist_defs.py:gen_blocklists'
 blocklist_defs.inputs = ['WindowsDllBlocklistDefs.in']
-blocklist_defs.py2 = True
 EXPORTS.mozilla += ['!' + hdr for hdr in blocklist_files]
 
 FINAL_LIBRARY = 'mozglue'