diff --git a/lib/libbearssl/Makefile.inc b/lib/libbearssl/Makefile.inc
index dd0e242c8ef0..2af4864d8441 100644
--- a/lib/libbearssl/Makefile.inc
+++ b/lib/libbearssl/Makefile.inc
@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 BEARSSL?= ${SRCTOP}/contrib/bearssl
 BEARSSL_SRC= ${BEARSSL}/src
 
 CFLAGS+= -I${BEARSSL}/inc
-
+CFLAGS+= ${NO_WDEPRECATED_NON_PROTOTYPE}