diff --git a/controller/seafile-controller.c b/controller/seafile-controller.c
index 8ad47bf..9439bcd 100644
--- a/controller/seafile-controller.c
+++ b/controller/seafile-controller.c
@@ -712,12 +712,19 @@ sigchld_handler (int signo)
     waitpid (-1, NULL, WNOHANG);
 }
 
+static void
+sigusr1_handler (int signo)
+{
+    seafile_log_reopen();
+}
+
 static void
 set_signal_handlers ()
 {
     signal (SIGINT, sigint_handler);
     signal (SIGTERM, sigint_handler);
     signal (SIGCHLD, sigchld_handler);
+    signal (SIGUSR1, sigusr1_handler);
     signal (SIGPIPE, SIG_IGN);
 }