diff --git a/librb/src/rb_lib.c b/librb/src/rb_lib.c
index 05b9b7ee..e891bf8a 100644
--- a/librb/src/rb_lib.c
+++ b/librb/src/rb_lib.c
@@ -188,7 +188,7 @@ extern const char *librb_serno;
 const char *
 rb_lib_version(void)
 {
-	static char version_info[512];
+	static char version_info[640];
 	char ssl_info[512];
 	rb_get_ssl_info(ssl_info, sizeof(ssl_info));
 	snprintf(version_info, sizeof(version_info), "librb version: %s - %s", librb_serno, ssl_info);