diff --git a/src/test/java/org/gridsuite/modification/server/service/BuildTest.java b/src/test/java/org/gridsuite/modification/server/service/BuildTest.java
index f505fba68..fac2cd64f 100644
--- a/src/test/java/org/gridsuite/modification/server/service/BuildTest.java
+++ b/src/test/java/org/gridsuite/modification/server/service/BuildTest.java
@@ -62,7 +62,6 @@
 import java.io.IOException;
 import java.util.*;
 import java.util.concurrent.*;
-import java.util.concurrent.atomic.AtomicReference;
 
 import static com.powsybl.iidm.network.ReactiveLimitsKind.MIN_MAX;
 import static org.gridsuite.modification.server.Impacts.TestImpactUtils.*;