diff --git a/src/Database.cpp b/src/Database.cpp
index 284b661..b9440ac 100644
--- a/src/Database.cpp
+++ b/src/Database.cpp
@@ -73,6 +73,10 @@ Database::Database(const std::string& aFilename,
 Database::~Database() noexcept // nothrow
 {
     const int ret = sqlite3_close(mpSQLite);
+
+    // Avoid unreferenced variable warning when build in release mode
+    (void) ret;
+
     // Only case of error is SQLITE_BUSY: "database is locked" (some statements are not finalized)
     // Never throw an exception in a destructor :
     SQLITECPP_ASSERT(SQLITE_OK == ret, "database is locked");  // See SQLITECPP_ENABLE_ASSERT_HANDLER