diff --git a/configure.ac b/configure.ac
index f2db4bdaa..08fa672bc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -496,6 +496,8 @@ AC_ARG_ENABLE(alloc-checks, AC_HELP_STRING([--enable-alloc-checks],
 	, )
 if test x_$enable_alloc_checks = x_yes; then
 	AC_DEFINE(UNBOUND_ALLOC_STATS, 1, [use statistics for allocs and frees, for debug use])
+else
+	AC_FUNC_MALLOC
 fi
 
 # check to see if libraries are needed for these functions.
@@ -504,7 +506,6 @@ AC_CHECK_LIB(nsl, inet_pton)
 
 AC_FUNC_CHOWN
 AC_FUNC_FORK
-AC_FUNC_MALLOC
 AC_TYPE_SIGNAL
 AC_FUNC_FSEEKO
 AC_SYS_LARGEFILE
diff --git a/doc/Changelog b/doc/Changelog
index 3651af37d..72bdb1fac 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -13,6 +13,7 @@
 	  zone (for wildcarded zone cuts), and check absence of CNAME bit,
 	  for a nodata proof.
 	- configure option for memory allocation debugging.
+	- port configure option for memory allocation to solaris10.
 
 4 September 2007: Wouter
 	- fixup of Leakage warning when serviced queries processed multiple