diff --git a/doc/Changelog b/doc/Changelog
index a62413e41..39a63d78e 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,5 +1,6 @@
 17 October 2016: Wouter
 	- Re-fix #839 from view commit overwrite.
+	- Fixup const void cast warning.
 
 12 October 2016: Ralph
 	- Free view config elements.
diff --git a/smallapp/unbound-anchor.c b/smallapp/unbound-anchor.c
index 68e8e405f..c41ec90be 100644
--- a/smallapp/unbound-anchor.c
+++ b/smallapp/unbound-anchor.c
@@ -420,7 +420,7 @@ read_builtin_cert(void)
 {
 	const char* builtin_cert = get_builtin_cert();
 	STACK_OF(X509)* sk;
-	BIO *bio = BIO_new_mem_buf(builtin_cert,
+	BIO *bio = BIO_new_mem_buf((const void*)builtin_cert,
 		(int)strlen(builtin_cert));
 	if(!bio) {
 		if(verb) printf("out of memory\n");