diff --git a/cmd/promtool/rules.go b/cmd/promtool/rules.go
index d8d6bb83e..5a1864484 100644
--- a/cmd/promtool/rules.go
+++ b/cmd/promtool/rules.go
@@ -234,17 +234,3 @@ func (m *multipleAppender) flushAndCommit(ctx context.Context) error {
 	}
 	return nil
 }
-
-func max(x, y int64) int64 {
-	if x > y {
-		return x
-	}
-	return y
-}
-
-func min(x, y int64) int64 {
-	if x < y {
-		return x
-	}
-	return y
-}
diff --git a/tsdb/head_append.go b/tsdb/head_append.go
index 58d24ceb9..23c2c0fbd 100644
--- a/tsdb/head_append.go
+++ b/tsdb/head_append.go
@@ -198,13 +198,6 @@ func (h *Head) AppendableMinValidTime() (int64, bool) {
 	return h.appendableMinValidTime(), true
 }
 
-func max(a, b int64) int64 {
-	if a > b {
-		return a
-	}
-	return b
-}
-
 func (h *Head) getAppendBuffer() []record.RefSample {
 	b := h.appendPool.Get()
 	if b == nil {
diff --git a/tsdb/wlog/live_reader.go b/tsdb/wlog/live_reader.go
index 905bbf00d..6eaef5f39 100644
--- a/tsdb/wlog/live_reader.go
+++ b/tsdb/wlog/live_reader.go
@@ -327,10 +327,3 @@ func (r *LiveReader) readRecord() ([]byte, int, error) {
 
 	return rec, length + recordHeaderSize, nil
 }
-
-func min(i, j int) int {
-	if i < j {
-		return i
-	}
-	return j
-}