diff --git a/configure.in b/configure.in
index b25fe900..47089de1 100644
--- a/configure.in
+++ b/configure.in
@@ -443,7 +443,7 @@ AC_FUNC_UTIME_NULL
 AC_FUNC_ALLOCA
 AC_CHECK_FUNCS(waitpid wait4 getcwd strdup strerror chown chmod mknod mkfifo \
     fchmod fstat strchr readlink link utime utimes strftime mtrace ftruncate \
-    memmove lchown vsnprintf snprintf asprintf setsid glob strpbrk \
+    memmove lchown vsnprintf snprintf asprintf setsid glob strpbrk setmode \
     strlcat strlcpy strtol mallinfo getgroups setgroups geteuid getegid \
     open64 mkstemp64)