diff --git a/src/crypto.h b/src/crypto.h
index 1ff29d8c..1791551f 100644
--- a/src/crypto.h
+++ b/src/crypto.h
@@ -80,7 +80,7 @@ typedef mbedtls_md_info_t digest_type_t;
 #endif
 
 #ifndef BF_ERROR_RATE_FOR_SERVER
-#define BF_ERROR_RATE_FOR_SERVER 1e-6
+#define BF_ERROR_RATE_FOR_SERVER 1e-10
 #endif
 
 #ifndef BF_ERROR_RATE_FOR_CLIENT