1 files changed, 4 insertions, 2 deletions
diff --git a/string/strncat.c b/string/strncat.c
index 2e2de11508..72d9d697ac 100644
--- a/string/strncat.c
+++ b/string/strncat.c
@@ -24,10 +24,12 @@
 typedef char reg_char;
 #endif
 
-#undef strncat
+#ifndef STRNCAT
+# define STRNCAT  strncat
+#endif
 
 char *
-strncat (s1, s2, n)
+STRNCAT (s1, s2, n)
      char *s1;
      const char *s2;
      size_t n;