diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 62c741154ba..d2b1cd656c5 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2009-04-06  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	* include/bits/random.tcc (linear_congruential_engine<>::
+	seed(seed_seq&)): Fix typo in last fix for __m == 0.
+
 2009-04-06  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* include/bits/random.h (operator==): Mark all inline.
diff --git a/libstdc++-v3/include/bits/random.tcc b/libstdc++-v3/include/bits/random.tcc
index b6a25434bf3..ee2b71c6f33 100644
--- a/libstdc++-v3/include/bits/random.tcc
+++ b/libstdc++-v3/include/bits/random.tcc
@@ -119,8 +119,8 @@ namespace std
     seed(seed_seq& __q)
     {
       const _UIntType __k0 = __m == 0 ? std::numeric_limits<_UIntType>::digits
-	                              : (std::__lg(__m) + 31);
-      const _UIntType __k = __k0 / 32;
+	                              : std::__lg(__m);
+      const _UIntType __k = (__k0 + 31) / 32;
       _UIntType __arr[__k + 3];
       __q.generate(__arr + 0, __arr + 3);
       _UIntType __factor = 1U;