diff --git a/Modules/stropmodule.c b/Modules/stropmodule.c
index 3921d34..240a056 100644
--- a/Modules/stropmodule.c
+++ b/Modules/stropmodule.c
@@ -228,6 +228,7 @@
 		if (item && !PyString_Check(item)) {
 			PyErr_SetString(PyExc_TypeError,
 				 "first argument must be sequence of strings");
+			Py_DECREF(item);
 			return NULL;
 		}
 		return item;