diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 5649e86..4baa683 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -1251,8 +1251,10 @@ PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit,
             Py_DECREF(f);
             return -1;
         }
-        if (PyDict_SetItemString(d, "__cached__", Py_None) < 0)
+        if (PyDict_SetItemString(d, "__cached__", Py_None) < 0) {
+            Py_DECREF(f);
             return -1;
+        }
         set_file_name = 1;
         Py_DECREF(f);
     }