diff --git a/include/rapidjson/reader.h b/include/rapidjson/reader.h
index 243e0d2..16e2d07 100644
--- a/include/rapidjson/reader.h
+++ b/include/rapidjson/reader.h
@@ -1792,8 +1792,7 @@ private:
         case IterativeParsingKeyValueDelimiterState:
         case IterativeParsingArrayInitialState:
         case IterativeParsingElementDelimiterState: RAPIDJSON_PARSE_ERROR(kParseErrorValueInvalid, is.Tell()); return;
-        case IterativeParsingElementState:          RAPIDJSON_PARSE_ERROR(kParseErrorArrayMissCommaOrSquareBracket, is.Tell()); return;
-        default:                                    RAPIDJSON_PARSE_ERROR(kParseErrorUnspecificSyntaxError, is.Tell()); return;
+        default: RAPIDJSON_ASSERT(src == IterativeParsingElementState); RAPIDJSON_PARSE_ERROR(kParseErrorArrayMissCommaOrSquareBracket, is.Tell()); return;
         }
     }