diff --git a/data.c b/data.c
index 72b63f8..92574c2 100644
--- a/data.c
+++ b/data.c
@@ -1575,14 +1575,14 @@ xs_list *history_list(snac *snac)
 }
 
 
-void lastlog_write(snac *snac)
+void lastlog_write(snac *snac, const char *source)
 /* writes the last time the user logged in */
 {
     xs *fn = xs_fmt("%s/lastlog.txt", snac->basedir);
     FILE *f;
 
     if ((f = fopen(fn, "w")) != NULL) {
-        fprintf(f, "%lf\n", ftime());
+        fprintf(f, "%lf %s\n", ftime(), source);
         fclose(f);
     }
 }
diff --git a/html.c b/html.c
index 8d4203d..1227cfe 100644
--- a/html.c
+++ b/html.c
@@ -34,7 +34,7 @@ int login(snac *snac, const xs_dict *headers)
     }
 
     if (logged_in)
-        lastlog_write(snac);
+        lastlog_write(snac, "web");
 
     return logged_in;
 }
diff --git a/main.c b/main.c
index 3f34673..322aa67 100644
--- a/main.c
+++ b/main.c
@@ -145,6 +145,8 @@ int main(int argc, char *argv[])
         return 1;
     }
 
+    lastlog_write(&snac, "cmdline");
+
     if (strcmp(cmd, "resetpwd") == 0) {
         return resetpwd(&snac);
     }
diff --git a/mastoapi.c b/mastoapi.c
index b82ecfa..1b9ab09 100644
--- a/mastoapi.c
+++ b/mastoapi.c
@@ -854,7 +854,7 @@ int process_auth_token(snac *snac, const xs_dict *req)
                 logged_in = 1;
 
                 /* this counts as a 'login' */
-                lastlog_write(snac);
+                lastlog_write(snac, "mastoapi");
 
                 srv_debug(2, xs_fmt("mastoapi auth: valid token for user %s", uid));
             }
diff --git a/snac.h b/snac.h
index 6a8092a..2a66255 100644
--- a/snac.h
+++ b/snac.h
@@ -142,7 +142,7 @@ xs_str *history_get(snac *snac, const char *id);
 int history_del(snac *snac, const char *id);
 xs_list *history_list(snac *snac);
 
-void lastlog_write(snac *snac);
+void lastlog_write(snac *snac, const char *source);
 
 xs_str *notify_check_time(snac *snac, int reset);
 void notify_add(snac *snac, const char *type, const char *utype,