diff --git a/configure.ac b/configure.ac
index 9598ece0..d207b170 100644
--- a/configure.ac
+++ b/configure.ac
@@ -58,7 +58,6 @@ AC_SYS_LARGEFILE
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
-AC_TYPE_UID_T
 AC_TYPE_OFF_T
 AC_TYPE_PID_T
 AC_TYPE_MODE_T