diff --git a/src/newgrf.cpp b/src/newgrf.cpp --- a/src/newgrf.cpp +++ b/src/newgrf.cpp @@ -5595,7 +5595,7 @@ void CheckForMissingSprites() } if (missing) { - ShowErrorMessage(STR_NEWGRF_ERROR_MISSING_SPRITES, INVALID_STRING_ID, WL_CRITICAL); + ShowErrorMessage(IsReleasedVersion() ? STR_NEWGRF_ERROR_MISSING_SPRITES : STR_NEWGRF_ERROR_MISSING_SPRITES_UNSTABLE, INVALID_STRING_ID, WL_CRITICAL); } }