diff --git a/src/ex_cmds2.c b/src/ex_cmds2.c
index 5efe0ec..e0a392d 100644
--- a/src/ex_cmds2.c
+++ b/src/ex_cmds2.c
@@ -1101,6 +1101,7 @@
     if (first_timer != NULL)
 	first_timer->tr_prev = timer;
     first_timer = timer;
+    did_add_timer = TRUE;
 }
 
 /*