diff --git a/configure b/configure
index 23e9457d5a..dada9446d7 100755
--- a/configure
+++ b/configure
@@ -19553,7 +19553,7 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 #include <sys/socket.h>
 #include <netdb.h>
 int getnameinfo(const struct sockaddr *, socklen_t, char *,
-		socklen_t, char *, socklen_t, unsigned int);
+		socklen_t, char *, socklen_t, int);
 int
 main ()
 {
@@ -19563,8 +19563,8 @@ main ()
 }
 _ACEOF
 if ac_fn_c_try_compile "$LINENO"; then :
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: socklen_t for buflen; u_int for flags" >&5
-$as_echo "socklen_t for buflen; u_int for flags" >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: socklen_t for buflen; int for flags" >&5
+$as_echo "socklen_t for buflen; int for flags" >&6; }
 
 $as_echo "#define IRS_GETNAMEINFO_SOCKLEN_T socklen_t" >>confdefs.h
 
@@ -19572,7 +19572,7 @@ $as_echo "#define IRS_GETNAMEINFO_SOCKLEN_T socklen_t" >>confdefs.h
 $as_echo "#define IRS_GETNAMEINFO_BUFLEN_T socklen_t" >>confdefs.h
 
 
-$as_echo "#define IRS_GETNAMEINFO_FLAGS_T unsigned int" >>confdefs.h
+$as_echo "#define IRS_GETNAMEINFO_FLAGS_T int" >>confdefs.h
 
 else
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -19633,7 +19633,7 @@ $as_echo "#define IRS_GETNAMEINFO_SOCKLEN_T socklen_t" >>confdefs.h
 
 $as_echo "#define IRS_GETNAMEINFO_BUFLEN_T socklen_t" >>confdefs.h
 
-$as_echo "#define IRS_GETNAMEINFO_FLAGS_T int" >>confdefs.h
+$as_echo "#define IRS_GETNAMEINFO_FLAGS_T unsigned int" >>confdefs.h
 
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
diff --git a/configure.in b/configure.in
index 9090939b38..756effbe2c 100644
--- a/configure.in
+++ b/configure.in
@@ -3406,14 +3406,14 @@ AC_TRY_COMPILE([
 #include <sys/socket.h>
 #include <netdb.h>
 int getnameinfo(const struct sockaddr *, socklen_t, char *,
-		socklen_t, char *, socklen_t, unsigned int);],
+		socklen_t, char *, socklen_t, int);],
 [ return (0);],
-	[AC_MSG_RESULT(socklen_t for buflen; u_int for flags)
+	[AC_MSG_RESULT(socklen_t for buflen; int for flags)
 	 AC_DEFINE(IRS_GETNAMEINFO_SOCKLEN_T, socklen_t,
 		   [Define to the sockaddr length type used by getnameinfo(3).])
 	 AC_DEFINE(IRS_GETNAMEINFO_BUFLEN_T, socklen_t,
 		   [Define to the buffer length type used by getnameinfo(3).])
-	 AC_DEFINE(IRS_GETNAMEINFO_FLAGS_T, unsigned int,
+	 AC_DEFINE(IRS_GETNAMEINFO_FLAGS_T, int,
 		   [Define to the flags type used by getnameinfo(3).])],
 [AC_TRY_COMPILE([
 #include <sys/types.h>
@@ -3437,10 +3437,10 @@ int getnameinfo(const struct sockaddr *, size_t, char *,
 	 AC_DEFINE(IRS_GETNAMEINFO_SOCKLEN_T, size_t)
 	 AC_DEFINE(IRS_GETNAMEINFO_BUFLEN_T, size_t)
 	 AC_DEFINE(IRS_GETNAMEINFO_FLAGS_T, int)],
-[AC_MSG_RESULT(not match any subspecies; assume standard definition)
+[AC_MSG_RESULT(not match any subspecies; socklen_t for buflen; u_int for flags)
 AC_DEFINE(IRS_GETNAMEINFO_SOCKLEN_T, socklen_t)
 AC_DEFINE(IRS_GETNAMEINFO_BUFLEN_T, socklen_t)
-AC_DEFINE(IRS_GETNAMEINFO_FLAGS_T, int)])])])
+AC_DEFINE(IRS_GETNAMEINFO_FLAGS_T, unsigned int)])])])
 
 #
 # ...and same for gai_strerror().