diff --git a/tsdb/head.go b/tsdb/head.go
index f3e0a7f6c..41933d7a0 100644
--- a/tsdb/head.go
+++ b/tsdb/head.go
@@ -836,6 +836,7 @@ func (h *Head) loadMmappedChunks(refSeries map[chunks.HeadSeriesRef]*memSeries)
 				numSamples: numSamples,
 			})
 
+			h.updateMinOOOMaxOOOTime(mint, maxt)
 			return nil
 		}