diff --git a/src/decode.c b/src/decode.c index dcd11eb5d..99e9cdc67 100644 --- a/src/decode.c +++ b/src/decode.c @@ -298,7 +298,7 @@ get_unpacker(ImagingDecoderObject *decoder, const char *mode, const char *rawmod unpack = ImagingFindUnpacker(mode, rawmode, &bits); if (!unpack) { Py_DECREF(decoder); - PyErr_SetString(PyExc_ValueError, "unknown raw mode"); + PyErr_SetString(PyExc_ValueError, "unknown raw mode for given image mode"); return -1; }