diff --git a/hiredis.c b/hiredis.c
index 9c2788a..d28fcb9 100644
--- a/hiredis.c
+++ b/hiredis.c
@@ -618,6 +618,7 @@ void redisFree(redisContext *c) {
     if (c->ssl) {
         redisFreeSsl(c->ssl);
     }
+    memset(0xff, c, sizeof(*c));
     free(c);
 }