diff --git a/src/test/java/eu/ztsh/lfr/core/impl/files/FileLoadingServiceTest.java b/src/test/java/eu/ztsh/lfr/core/impl/files/FileLoadingServiceTest.java
index 8561e2f..86ca75c 100644
--- a/src/test/java/eu/ztsh/lfr/core/impl/files/FileLoadingServiceTest.java
+++ b/src/test/java/eu/ztsh/lfr/core/impl/files/FileLoadingServiceTest.java
@@ -29,7 +29,7 @@ class FileLoadingServiceTest {
             .publishEvent(captor.capture());
         var averages = captor.getValue().averages();
         assertThat(averages).hasSize(1);
-        var list = averages.get("Warszawa");
+        var list = averages.get("warszawa");
         assertThat(list).hasSize(1);
         assertThat(list.getFirst()).satisfies(item -> {
             assertThat(item.getYear()).isEqualTo("2018");