diff --git a/tsdb/chunks/head_chunks.go b/tsdb/chunks/head_chunks.go
index 31fddec7c..204a095dc 100644
--- a/tsdb/chunks/head_chunks.go
+++ b/tsdb/chunks/head_chunks.go
@@ -143,7 +143,7 @@ type mmappedChunkFile struct {
 func NewChunkDiskMapper(dir string, pool chunkenc.Pool, writeBufferSize int) (*ChunkDiskMapper, error) {
 	// Validate write buffer size.
 	if writeBufferSize < MinWriteBufferSize || writeBufferSize > MaxWriteBufferSize {
-		return nil, errors.Errorf("ChunkDiskMapper write buffer size should be between %d and %d (actual: %d)", MinWriteBufferSize, MaxHeadChunkFileSize, writeBufferSize)
+		return nil, errors.Errorf("ChunkDiskMapper write buffer size should be between %d and %d (actual: %d)", MinWriteBufferSize, MaxWriteBufferSize, writeBufferSize)
 	}
 	if writeBufferSize%1024 != 0 {
 		return nil, errors.Errorf("ChunkDiskMapper write buffer size should be a multiple of 1024 (actual: %d)", writeBufferSize)