diff --git a/ChangeLog b/ChangeLog
index 9da47c34a..1486683be 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2001-10-14  Gary Houston  <ghouston@arglist.com>
+
+	* configure.in: include sys/types.h when testing uint32_t.
+	thanks to Bill Schottstaedt.
+
 2001-10-14  Marius Vollmer  <mvo@zagadka.ping.de>
 
 	* configure.in: Do not use an absolute path for <unistd.h> when
diff --git a/configure.in b/configure.in
index 756a40735..0ddff0eb7 100644
--- a/configure.in
+++ b/configure.in
@@ -309,11 +309,12 @@ if test $guile_cv_have_h_errno = yes; then
   AC_DEFINE(HAVE_H_ERRNO)
 fi
 
-AC_MSG_CHECKING(whether netdb.h defines uint32_t)
+AC_MSG_CHECKING(whether uint32_t is defined)
 AC_CACHE_VAL(guile_cv_have_uint32_t,
-[AC_TRY_COMPILE([#include <netdb.h>],
-[uint32_t a;],
-guile_cv_have_uint32_t=yes, guile_cv_have_uint32_t=no)])
+  [AC_TRY_COMPILE([#include <sys/types.h>
+	           #include <netdb.h>],
+		  [uint32_t a;],
+		  guile_cv_have_uint32_t=yes, guile_cv_have_uint32_t=no)])
 AC_MSG_RESULT($guile_cv_have_uint32_t)
 if test $guile_cv_have_uint32_t = yes; then
   AC_DEFINE(HAVE_UINT32_T)