diff --git a/src/core/database.cpp b/src/core/database.cpp
index 21686f4..d89d156 100644
--- a/src/core/database.cpp
+++ b/src/core/database.cpp
@@ -43,7 +43,7 @@ void Database::newDb()
 
     fs::path sourcePath = dbname_;
     fs::path destPath = sourcePath.parent_path() / sourcePath.stem();
-    destPath += std::string("_") += boost::posix_time::to_iso_extended_string(boost::posix_time::second_clock::local_time()) += ".db";
+    destPath += std::string("_") += boost::posix_time::to_iso_string(boost::posix_time::second_clock::local_time()) += ".db";
 
     fs::copy_file(sourcePath, destPath, fs::copy_options::overwrite_existing);