diff --git a/plugins/python/uwsgi_pymodule.c b/plugins/python/uwsgi_pymodule.c
index cde07f69..95e53405 100644
--- a/plugins/python/uwsgi_pymodule.c
+++ b/plugins/python/uwsgi_pymodule.c
@@ -2357,7 +2357,7 @@ PyObject *py_uwsgi_cache_set(PyObject * self, PyObject * args) {
 
         char *key ;
         char *value ;
-	Py_ssize_t vallen;
+	Py_ssize_t vallen = 0;
 
 	uint64_t expires = 0;