diff --git a/lib/storage/storage.go b/lib/storage/storage.go
index b57737d619..f059071695 100644
--- a/lib/storage/storage.go
+++ b/lib/storage/storage.go
@@ -910,8 +910,8 @@ func (s *Storage) mustLoadHourMetricIDs(hour uint64, name string) *hourMetricIDs
 		logger.Panicf("FATAL: cannot read %s: %s", path, err)
 	}
 	srcOrigLen := len(src)
-	if len(src) < 24 {
-		logger.Errorf("discarding %s, since it has broken header; got %d bytes; want %d bytes", path, len(src), 24)
+	if len(src) < 16 {
+		logger.Errorf("discarding %s, since it has broken header; got %d bytes; want %d bytes", path, len(src), 16)
 		return hm
 	}