diff --git a/core/uwsgi.c b/core/uwsgi.c
index 61119476..2704ad32 100644
--- a/core/uwsgi.c
+++ b/core/uwsgi.c
@@ -2082,6 +2082,7 @@ int main(int argc, char *argv[], char *envp[]) {
 	uwsgi.magic_table['v'] = uwsgi.cwd;
 	uwsgi.magic_table['h'] = uwsgi.hostname;
 	uwsgi.magic_table['V'] = UWSGI_VERSION;
+	uwsgi.magic_table['['] = "\033";
 
 	// you can embed a ini file in the uWSGi binary with default options
 #ifdef UWSGI_EMBED_CONFIG