diff --git a/Lib/test/test_pow.py b/Lib/test/test_pow.py
index 41911bf570a..b315bd51118 100644
--- a/Lib/test/test_pow.py
+++ b/Lib/test/test_pow.py
@@ -117,3 +117,5 @@ for i in range(-10, 11):
             if j >= 0 and k != 0:
                 o = pow(long(i),j) % k
                 n = pow(long(i),j,k)
+                if o != n: print 'Integer mismatch:', i,j,k
+