--- a/configure.in
+++ b/configure.in
@@ -29,7 +29,7 @@
 EXTERN_CXXFLAGS="$CXXFLAGS"
 
 AC_INIT
-AC_REVISION($Revision: 1.597 $)
+AC_REVISION($Revision: 1.598 $)
 AC_PREREQ(2.57)
 AC_CONFIG_SRCDIR([src/octave.cc])
 AC_CONFIG_HEADER(config.h)
@@ -1195,7 +1195,11 @@
 AC_TYPE_UID_T
 AC_CHECK_TYPES([dev_t, ino_t, nlink_t, nlink_t])
 AC_CHECK_TYPES([long long int, unsigned long long int])
-AC_CHECK_TYPES([sigset_t, sig_atomic_t], , , [#include <signal.h>])
+AC_CHECK_TYPES([sigset_t, sig_atomic_t], , , [
+#if defined (HAVE_SYS_TYPES_H)
+#include <sys/types.h>
+#endif
+#include <signal.h>])
 
 ### How big are ints and how are they oriented?  These could probably
 ### be eliminated in favor of run-time checks.