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-rw-r--r--contrib/ipfilter/md5.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/contrib/ipfilter/md5.h b/contrib/ipfilter/md5.h
index 82705312fbed..914df74355a0 100644
--- a/contrib/ipfilter/md5.h
+++ b/contrib/ipfilter/md5.h
@@ -39,7 +39,7 @@
***********************************************************************
*/
-#ifndef __MD5_INCLUDE__
+#if !defined(__MD5_INCLUDE__) && !defined(_SYS_MD5_H)
#ifndef __P
# ifdef __STDC__