diff --git a/xexe/processes.py b/xexe/processes.py
index 16775d2..020c918 100644
--- a/xexe/processes.py
+++ b/xexe/processes.py
@@ -6,9 +6,13 @@ from typing import List
 from money.currency import Currency
 from xecd_rates_client import XecdClient
 
-from xexe.constants import RATES_SOURCES
 from xexe.exchange_rates import ExchangeRates, add_equal_rates, add_inverse_rates
-from xexe.rate_fetching import MockRateFetcher, RateFetcher, XERateFetcher
+from xexe.rate_fetching import (
+    MockRateFetcher,
+    RateFetcher,
+    XERateFetcher,
+    build_rate_fetcher,
+)
 from xexe.rate_writing import CSVRateWriter, RateWriter
 from xexe.utils import DateRange, generate_currency_and_dates_combinations
 
@@ -132,10 +136,6 @@ def write_rates_to_output(process_state, rates):
     rates_writer.write_rates(rates)
 
 
-def build_rate_fetcher(rates_source: str):
-    return RATES_SOURCES[rates_source]()
-
-
 class GetRatesProcessState:
     def __init__(self, output: str, ignore_warnings: bool) -> None:
         self.writer = self._select_writer(output)
diff --git a/xexe/rate_fetching.py b/xexe/rate_fetching.py
index 8fd5d73..17ae137 100644
--- a/xexe/rate_fetching.py
+++ b/xexe/rate_fetching.py
@@ -7,6 +7,7 @@ from money.currency import Currency, CurrencyHelper
 from money.money import Money
 from xecd_rates_client import XecdClient
 
+from xexe.constants import RATES_SOURCES
 from xexe.exchange_rates import ExchangeRate
 
 
@@ -79,3 +80,7 @@ class XERateFetcher(RateFetcher):
             rate_date=rate_date,
             rate=rate,
         )
+
+
+def build_rate_fetcher(rates_source: str):
+    return RATES_SOURCES[rates_source]()