diff --git a/backend/src/test/java/service/PortfolioServiceUnitTest.java b/backend/src/test/java/service/PortfolioServiceUnitTest.java
index 38d5bcec..c53f3bcc 100644
--- a/backend/src/test/java/service/PortfolioServiceUnitTest.java
+++ b/backend/src/test/java/service/PortfolioServiceUnitTest.java
@@ -49,7 +49,7 @@ public void testAddAssetToPortfolio_AssetNotFound() {
     @Test
     public void testAddAssetToPortfolio_AssetFound() {
         AddAssetToPortfolioRequest request = new AddAssetToPortfolioRequest();
-        when(assetRepository.existsById(1L)).thenReturn(false);
+        when(assetRepository.existsById(1L)).thenReturn(true);
 
         AddAssetToPortfolioResponse result = portfolioService.addAssetToPortfolio(request);