diff --git a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
index 191667c0d8d..8dff6c52aa0 100644
--- a/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
+++ b/src/sage/rings/polynomial/multi_polynomial_libsingular.pyx
@@ -4659,7 +4659,7 @@ cdef class MPolynomial_libsingular(MPolynomial_libsingular_base):
         Ensure interrupt does not make the internal state inconsistent::
 
             sage: R.<x,y,z> = QQ[]
-            sage: n = 11  # chosen so that the computation takes > 1 second but not excessively long.
+            sage: n = 12  # chosen so that the computation takes > 1 second but not excessively long.
             ....: # when Singular improves the algorithm or hardware gets faster, increase n.
             sage: alarm(0.5); h = (x^2^n-y^2^n).factor()
             Traceback (most recent call last):
@@ -4671,7 +4671,7 @@ cdef class MPolynomial_libsingular(MPolynomial_libsingular_base):
             AlarmInterrupt
             sage: h = (x^2^n-y^2^n).factor()
             sage: h
-            (x - y) * (x + y) * (x^2 + y^2) * (x^4 + y^4) * (x^8 + y^8) * (x^16 + y^16) * (x^32 + y^32) * (x^64 + y^64) * (x^128 + y^128) * (x^256 + y^256) * (x^512 + y^512) * (x^1024 + y^1024)
+            (x - y) * (x + y) * (x^2 + y^2) * (x^4 + y^4) * (x^8 + y^8) * (x^16 + y^16) * (x^32 + y^32) * (x^64 + y^64) * (x^128 + y^128) * (x^256 + y^256) * (x^512 + y^512) * (x^1024 + y^1024) * (x^2048 + y^2048)
         """
         cdef ring *_ring = self._parent_ring
         cdef intvec *iv