diff --git a/jnius/jnius_utils.pxi b/jnius/jnius_utils.pxi
index 3f04de3..5f8a395 100644
--- a/jnius/jnius_utils.pxi
+++ b/jnius/jnius_utils.pxi
@@ -266,7 +266,7 @@ cdef int calculate_score(sign_args, args, is_varargs=False) except *:
 
         if r == 'S' or r == 'I':
             if isinstance(arg, int) or (
-                    (isinstance(arg, long) and arg < 2 ** 31)):
+                    (isinstance(arg, long) and arg < 2147483648)):
                 score += 10
                 continue
             elif isinstance(arg, float):