diff --git a/configure.ac b/configure.ac
index 77853aa596..def6e207cd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1186,7 +1186,7 @@ AC_CHECK_HEADERS([sys/param.h])
 AC_CHECK_HEADERS([libgen.h])
 #AC_CHECK_HEADERS([locale.h])
 AC_HEADER_STDC
-AC_CHECK_HEADERS([locale.h stdio.h stdarg.h fcntl.h malloc.h stdlib.h string.h strings.h unistd.h sys/stat.h getopt.h sys/time.h sys/types.h time.h dirent.h])
+AC_CHECK_HEADERS([locale.h stdio.h stdarg.h fcntl.h malloc.h stdlib.h string.h strings.h unistd.h sys/stat.h getopt.h sys/time.h sys/types.h time.h dirent.h stdint.h])
 
 # Do sys/resource.h separately
 #AC_CHECK_HEADERS([sys/resource.h],[havesysresource=1],[havesysresource=0])
@@ -1346,7 +1346,7 @@ AC_STRUCT_ST_BLKSIZE
 UD_CHECK_IEEE
 AC_CHECK_TYPES([size_t, ssize_t, schar, uchar, longlong, ushort, uint, int64, uint64, size64_t, ssize64_t, _off64_t, uint64_t, ptrdiff_t])
 AC_TYPE_OFF_T
-AC_CHECK_TYPES([uintptr_t])
+AC_TYPE_UINTPTR_T
 AC_C_CHAR_UNSIGNED
 AC_C_BIGENDIAN