diff --git a/configure.ac b/configure.ac
index 74220a2..8701ad9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -143,7 +143,6 @@ AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
 AC_FUNC_MALLOC
 AC_FUNC_REALLOC
 
-AC_CHECK_FUNCS([strdup])
 AC_CHECK_FUNCS([strlcpy strlcat setgroups])
 
 dnl Enable extra warnings