diff --git a/configure.in b/configure.in
index 8a3e0d350..30f8c1550 100644
--- a/configure.in
+++ b/configure.in
@@ -191,7 +191,12 @@ dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
 AC_TYPE_OFF_T
 AC_TYPE_SIZE_T
+AC_CHECK_TYPE_EXTRA(ssize_t, int, [#include <unistd.h>
+foo])
+AC_TYPE_PID_T
+AC_TYPE_UID_T
 AC_TYPE_MODE_T
+AC_TYPE_SIG_ATOMIC_T
 AC_HEADER_TIME
 AC_STRUCT_TM
 AC_DECL_YYTEXT
@@ -440,16 +445,6 @@ dnl
 
 AC_KRB_STRUCT_SOCKADDR_SA_LEN
 
-dnl
-dnl Check for some common types
-dnl
-
-AC_TYPE_PID_T
-AC_TYPE_UID_T
-AC_TYPE_OFF_T
-AC_TYPE_SIZE_T
-AC_CHECK_TYPE(ssize_t, int)
-AC_TYPE_SIG_ATOMIC_T
 
 dnl AC_SUBST(LIBOBJS)