diff --git a/configure.in b/configure.in
index 259dff7cb8..80975b8264 100644
--- a/configure.in
+++ b/configure.in
@@ -2480,7 +2480,6 @@ AC_CHECK_FUNCS(			\
 	seteuid			\
 	signal			\
 	strdup			\
-	strnlen			\
 	strpbrk			\
 	strrchr			\
 	strsep			\