diff --git a/src/test/java/org/gridsuite/modification/server/Impacts/TestImpactUtils.java b/src/test/java/org/gridsuite/modification/server/Impacts/TestImpactUtils.java
index d48a523d1..1e04fcddd 100644
--- a/src/test/java/org/gridsuite/modification/server/Impacts/TestImpactUtils.java
+++ b/src/test/java/org/gridsuite/modification/server/Impacts/TestImpactUtils.java
@@ -167,6 +167,10 @@ private static List<AbstractBaseImpact> createBranchImpacts(ImpactType impactTyp
             createElementImpact(impactType, IdentifiableType.SWITCH, disconnectorId2, Set.of(substationId2))
         );
         if (impactType == ImpactType.CREATION) {
+            // During a creation of a 2WT we use the TapChangerAdder which set the tapChangerAttributes to the 2WT
+            // This setRatioTapChanger/setPhaseTapChanger calling generates a notifyUpdate for the newly created 2WT
+            // Then we must add a MODIFICATION impact on this newly created 2WT.
+            // TODO fix this
             impacts.add(createElementImpact(ImpactType.MODIFICATION, branchType, branchId, new TreeSet<>(List.of(substationId1, substationId2)))); // case with newtapChanger
         }
         if (impactType == ImpactType.DELETION) {
diff --git a/src/test/resources/application-default.yml b/src/test/resources/application-default.yml
index 554d1b302..5d889d4a0 100644
--- a/src/test/resources/application-default.yml
+++ b/src/test/resources/application-default.yml
@@ -4,18 +4,18 @@ spring:
     properties:
       dialect: org.hibernate.dialect.H2Dialect
       hibernate:
-        format_sql: true
-        generate_statistics: true
+        '[format_sql]': true
+        '[generate_statistics]': true
         dialect: org.hibernate.dialect.H2Dialect
     hibernate:
       #to turn off schema validation that fails (because of clob types) and blocks tests even if the schema is compatible
       ddl-auto: none
 logging:
-  level:
-    org.springframework.orm.jpa: INFO
-    org.springframework.transaction: INFO
-    org.hibernate.SQL: INFO
-    org.hibernate.type.descriptor.sql.BasicBinder: INFO
+  level: 
+    '[org.springframework.orm.jpa]': INFO
+    '[org.springframework.transaction]': INFO
+    '[org.hibernate.SQL]': INFO
+    '[org.hibernate.type.descriptor.sql.BasicBinder]': INFO
 gridsuite:
   services:
     report-server: