diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index efe5b29..75e4f4b 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -171,6 +171,12 @@
     return retval;
 
   error:
+    if (!PyErr_ExceptionMatches(PyExc_ImportError)
+        && !PyErr_ExceptionMatches(PyExc_AttributeError))
+    {
+        PyMem_RawFree(envar);
+        return NULL;
+    }
     /* If any of the imports went wrong, then warn and ignore. */
     PyErr_Clear();
     int status = PyErr_WarnFormat(