diff --git a/.travis.yml b/.travis.yml
index e4958fd90..53f3f6747 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -80,7 +80,7 @@ matrix:
         - python -m py_compile ./tools/donate-cpu.py
         - python3 -m py_compile ./tools/donate-cpu.py
         - python -m py_compile ./tools/donate-cpu-server.py
-        # donate-cpu-server.py is currently not Python 3 compatible
+        - python3 -m py_compile ./tools/donate-cpu-server.py
 # check addons/misra.py
         - cd addons/test
         - ${CPPCHECK} --dump misc-test.cpp
diff --git a/tools/donate-cpu-server.py b/tools/donate-cpu-server.py
index 3b23ea9e8..d3b2825e5 100644
--- a/tools/donate-cpu-server.py
+++ b/tools/donate-cpu-server.py
@@ -12,6 +12,7 @@ import sys
 import urllib
 import logging
 import logging.handlers
+import operator
 
 OLD_VERSION = '1.87'
 
@@ -522,7 +523,7 @@ def check_library_report(result_path, message_id):
                 function_counts[function_name] = function_counts.setdefault(function_name, 0) + 1
 
     function_details_list = []
-    for function_name, count in sorted(function_counts.iteritems(), key=lambda (k, v): (v, k), reverse=True):
+    for function_name, count in sorted(function_counts.items(), key=operator.itemgetter(1), reverse=True):
         if len(function_details_list) >= functions_shown_max:
             break
         function_details_list.append(str(count).rjust(column_widths[0]) + ' ' +