diff --git a/test/manager.cpp b/test/manager.cpp
index 6a2bbe8b..13446c46 100644
--- a/test/manager.cpp
+++ b/test/manager.cpp
@@ -11,7 +11,7 @@ TEST(ManagerTest, addBookFromPathAndGetIdTest)
     kiwix::Manager manager = kiwix::Manager(&lib);
 
     auto bookId = manager.addBookFromPathAndGetId("./test/example.zim");
-    EXPECT_NE(bookId, "");
+    ASSERT_NE(bookId, "");
     kiwix::Book book = lib.getBookById(bookId);
     EXPECT_EQ(book.getPath(), computeAbsolutePath("", "./test/example.zim"));
     
@@ -22,4 +22,4 @@ TEST(ManagerTest, addBookFromPathAndGetIdTest)
     auto savedPath = computeAbsolutePath(removeLastPathElement(manager.writableLibraryPath), pathToSave);
     EXPECT_EQ(book.getPath(), savedPath);
     EXPECT_EQ(book.getUrl(), url);
-}
\ No newline at end of file
+}