diff --git a/configure b/configure
index 04183b401c22e2450f2216dd8ee5f83bdf5f92c8..b7c8a91f8012903ec86c76e9d0fb999375859e64 100755
--- a/configure
+++ b/configure
@@ -15311,13 +15311,6 @@ _ACEOF
 
 rm -f conftest*
 
-if ${ac_cv_func_setvbuf_reversed+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  ac_cv_func_setvbuf_reversed=no
-fi
-
-
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking return type of signal handlers" >&5
 $as_echo_n "checking return type of signal handlers... " >&6; }
 if ${ac_cv_type_signal+:} false; then :
diff --git a/configure.ac b/configure.ac
index 2c47dc453d1504a26e914a0116ec86e3fba2a2eb..08238e44eaaebd323a2b24c5368d25c8d4be9684 100644
--- a/configure.ac
+++ b/configure.ac
@@ -686,7 +686,6 @@ AC_PROG_GCC_TRADITIONAL
 AC_FUNC_MEMCMP
 AC_FUNC_MMAP
 AC_FUNC_SELECT_ARGTYPES
-AC_FUNC_SETVBUF_REVERSED
 AC_TYPE_SIGNAL
 AC_FUNC_STAT
 AC_FUNC_STRCOLL