diff --git a/utils/lit/lit/Util.py b/utils/lit/lit/Util.py
index 6f09eedfb7a..3b28db48b53 100644
--- a/utils/lit/lit/Util.py
+++ b/utils/lit/lit/Util.py
@@ -6,7 +6,7 @@ def detectCPUs():
     """
     # Linux, Unix and MacOS:
     if hasattr(os, "sysconf"):
-        if os.sysconf_names.has_key("SC_NPROCESSORS_ONLN"):
+        if "SC_NPROCESSORS_ONLN" in os.sysconf_names:
             # Linux & Unix:
             ncpus = os.sysconf("SC_NPROCESSORS_ONLN")
             if isinstance(ncpus, int) and ncpus > 0:
@@ -14,7 +14,7 @@ def detectCPUs():
         else: # OSX:
             return int(capture(['sysctl', '-n', 'hw.ncpu']))
     # Windows:
-    if os.environ.has_key("NUMBER_OF_PROCESSORS"):
+    if "NUMBER_OF_PROCESSORS" in os.environ:
         ncpus = int(os.environ["NUMBER_OF_PROCESSORS"])
         if ncpus > 0:
             return ncpus