diff --git a/gas/ChangeLog b/gas/ChangeLog
index 0fff41bc15..ff7be50ee4 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,5 +1,7 @@
 2007-04-21  Nick Clifton  <nickc@redhat.com>
 
+	* config/atof-vax.c (md_atof): Fix comparison inside know().
+
 	* config/tc-ia64.c (emit_one_bundle): Fix typo.
 
 2007-04-21  Alan Modra  <amodra@bigpond.net.au>
diff --git a/gas/config/atof-vax.c b/gas/config/atof-vax.c
index 75756904fb..3947fedd54 100644
--- a/gas/config/atof-vax.c
+++ b/gas/config/atof-vax.c
@@ -435,7 +435,7 @@ md_atof (int what_statement_type,
          a little-endian machine, be very careful about
          converting words to chars.  */
       number_of_chars = atof_vax_sizeof (kind_of_float);
-      know (number_of_chars <= MAXIMUM_NUMBER_OF_LITTLENUMS * sizeof (LITTLENUM_TYPE));
+      know (number_of_chars <= (int)(MAXIMUM_NUMBER_OF_LITTLENUMS * sizeof (LITTLENUM_TYPE)));
       limit = words + (number_of_chars / sizeof (LITTLENUM_TYPE));
       for (littlenumP = words; littlenumP < limit; littlenumP++)
 	{