diff --git a/CHANGES b/CHANGES
index 1a1613112f..a8857ba092 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+1532.	[port]		netbsd: the configure test for <sys/sysctl.h>
+			requires <sys/param.h>.
+
 1531.	[port]		AIX more libtool fixes.
 
 1530.	[bug]		It was possible to trigger a INSIST() failure if a
diff --git a/configure.in b/configure.in
index 37ccb76f25..c86ecf7631 100644
--- a/configure.in
+++ b/configure.in
@@ -18,7 +18,7 @@ AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
 esyscmd([sed "s/^/# /" COPYRIGHT])dnl
 AC_DIVERT_POP()dnl
 
-AC_REVISION($Revision: 1.347 $)
+AC_REVISION($Revision: 1.348 $)
 
 AC_INIT(lib/dns/name.c)
 AC_PREREQ(2.13)
@@ -216,7 +216,12 @@ esac
 
 AC_HEADER_STDC
 
-AC_CHECK_HEADERS(fcntl.h sys/time.h unistd.h sys/sockio.h sys/select.h sys/sysctl.h net/if6.h)
+AC_CHECK_HEADERS(fcntl.h sys/time.h unistd.h sys/sockio.h sys/select.h sys/param.h sys/sysctl.h net/if6.h,,
+[$ac_includes_default
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+])
 
 AC_C_CONST
 AC_C_INLINE