1 files changed, 2 insertions, 0 deletions
diff --git a/Modules/cjkcodecs/multibytecodec.c b/Modules/cjkcodecs/multibytecodec.c
index 2a29b7d4cd..3c5173f68c 100644
--- a/Modules/cjkcodecs/multibytecodec.c
+++ b/Modules/cjkcodecs/multibytecodec.c
@@ -384,6 +384,8 @@ multibytecodec_decerror(MultibyteCodec *codec,
             PyErr_SetString(PyExc_RuntimeError,
                             "internal codec error");
             return -1;
+        case MBERR_EXCEPTION:
+            return -1;
         default:
             PyErr_SetString(PyExc_RuntimeError,
                             "unknown runtime error");