1 files changed, 1 insertions, 1 deletions
diff --git a/session.cc b/session.cc
index 5bb17c23..49b12f72 100644
--- a/session.cc
+++ b/session.cc
@@ -136,7 +136,7 @@ bool session_t::resolve(const std::string& name, value_t& result,
   switch (*p) {
   case 'd':
     if (name == "date_format") {
-      result.set_string(datetime_t::output_format);
+      result.set_string(ptime::output_format);
       return true;
     }
     break;