diff --git a/game-app/game-core/src/test/java/games/strategy/triplea/attachments/RulesAttachmentTest.java b/game-app/game-core/src/test/java/games/strategy/triplea/attachments/RulesAttachmentTest.java
index 2794fd81e6..b11538b64a 100644
--- a/game-app/game-core/src/test/java/games/strategy/triplea/attachments/RulesAttachmentTest.java
+++ b/game-app/game-core/src/test/java/games/strategy/triplea/attachments/RulesAttachmentTest.java
@@ -63,8 +63,8 @@ void setUp() {
     @Test
     void setHasResourceInvalidArgs() {
       assertThrows(
-        IllegalArgumentException.class,
-        () -> attachment.setHasResource("NOT A NUMBER:resource1String"));
+          IllegalArgumentException.class,
+          () -> attachment.setHasResource("NOT A NUMBER:resource1String"));
       verify(resourceList, times(0)).getResource(resource1String);
       assertThrows(GameParseException.class, () -> attachment.setHasResource("0:resource1String"));
       verify(resourceList, times(0)).getResource(resource1String);