diff --git a/src/frontends/lean/elaborator.cpp b/src/frontends/lean/elaborator.cpp
index b8ec7ad255..bd229b4664 100644
--- a/src/frontends/lean/elaborator.cpp
+++ b/src/frontends/lean/elaborator.cpp
@@ -1257,7 +1257,7 @@ public:
             if (!prev || p.first != prev->first) {
                 auto out = regular(m_env, m_ios);
                 flyinfo_scope info(out);
-                out << m_pos_provider->get_file_name() << ":" << p.first.first << ":" << p.first.second
+                out << m_pos_provider->get_file_name() << ":" << p.first.first << ":" << p.first.second+1
                     << ": type\n" << p.second << endl;
                 prev = p;
             }