diff --git a/server/tests/adresar/delete_adresar_test.rs b/server/tests/adresar/delete_adresar_test.rs
index 2a25a5f..7524e7b 100644
--- a/server/tests/adresar/delete_adresar_test.rs
+++ b/server/tests/adresar/delete_adresar_test.rs
@@ -30,7 +30,7 @@ async fn closed_pool(#[future] pool: PgPool) -> PgPool {
 async fn existing_record(#[future] pool: PgPool) -> (PgPool, i64, String) {
     let pool = pool.await;
     // Use a unique prefix for test data
-    let prefix = format!("DeleteTest_{}", chrono::Utc::now().timestamp_nanos());
+    let prefix = format!("DeleteTest_{}", chrono::Utc::now().timestamp_nanos_opt().unwrap_or_default());
 
     let record = sqlx::query!(
         r#"
@@ -51,7 +51,7 @@ async fn existing_record(#[future] pool: PgPool) -> (PgPool, i64, String) {
 async fn existing_deleted_record(#[future] pool: PgPool) -> (PgPool, i64, String) {
     let pool = pool.await;
     // Use a unique prefix for test data
-    let prefix = format!("DeletedTest_{}", chrono::Utc::now().timestamp_nanos());
+    let prefix = format!("DeletedTest_{}", chrono::Utc::now().timestamp_nanos_opt().unwrap_or_default());
 
     let record = sqlx::query!(
         r#"