diff --git a/src/awk/lines.awk b/src/awk/lines.awk
index 4478d11..e77855f 100644
--- a/src/awk/lines.awk
+++ b/src/awk/lines.awk
@@ -68,8 +68,8 @@ BEGIN                 {
   FAINT = "\033[2m";
   OFF = "\033[m";
 }
-BEGINFILE             { inside = 0; rs = 0; dur = 0; summary = ""; start = "ERROR"; end = "ERROR" }
-/^END:VEVENT/         { print "~", start, dur ? start " " end : end, title(start, summary), fn(FILENAME,    n, a); nextfile }
+BEGINFILE             { inside = 0; rs = 0; dur = 0; summary = ""; start = "ERROR"; end = "" }
+/^END:VEVENT/         { print "~", start, dur ? start " " end : (end ? end : start), title(start, summary), fn(FILENAME,    n, a); nextfile }
 /^DTSTART/ && inside  { start = parse(    dt) }
 /^DTEND/ && inside    { end = parse(    dt) }
 /^DURATION/ && inside { end = parse_duration(    dt, dta, i, n, a, seps); dur = 1 }