diff --git a/pkg/block/indexheader/lazy_binary_reader.go b/pkg/block/indexheader/lazy_binary_reader.go
index 649dccc46a4..e2aa9357d3a 100644
--- a/pkg/block/indexheader/lazy_binary_reader.go
+++ b/pkg/block/indexheader/lazy_binary_reader.go
@@ -33,23 +33,23 @@ type LazyBinaryReaderMetrics struct {
 func NewLazyBinaryReaderMetrics(reg prometheus.Registerer) *LazyBinaryReaderMetrics {
 	return &LazyBinaryReaderMetrics{
 		loadCount: promauto.With(reg).NewCounter(prometheus.CounterOpts{
-			Name: "binary_reader_lazy_load_total",
+			Name: "indexheader_lazy_load_total",
 			Help: "Total number of index-header lazy load operations.",
 		}),
 		loadFailedCount: promauto.With(reg).NewCounter(prometheus.CounterOpts{
-			Name: "binary_reader_lazy_load_failed_total",
+			Name: "indexheader_lazy_load_failed_total",
 			Help: "Total number of failed index-header lazy load operations.",
 		}),
 		unloadCount: promauto.With(reg).NewCounter(prometheus.CounterOpts{
-			Name: "binary_reader_lazy_unload_total",
+			Name: "indexheader_lazy_unload_total",
 			Help: "Total number of index-header lazy unload operations.",
 		}),
 		unloadFailedCount: promauto.With(reg).NewCounter(prometheus.CounterOpts{
-			Name: "binary_reader_lazy_unload_failed_total",
+			Name: "indexheader_lazy_unload_failed_total",
 			Help: "Total number of failed index-header lazy unload operations.",
 		}),
 		loadDuration: promauto.With(reg).NewHistogram(prometheus.HistogramOpts{
-			Name:    "binary_reader_lazy_load_duration_seconds",
+			Name:    "indexheader_lazy_load_duration_seconds",
 			Help:    "Duration of the index-header lazy loading in seconds.",
 			Buckets: []float64{0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1, 2, 5},
 		}),
diff --git a/pkg/block/indexheader/reader_pool.go b/pkg/block/indexheader/reader_pool.go
index 6e6c8812931..35d7437f9b8 100644
--- a/pkg/block/indexheader/reader_pool.go
+++ b/pkg/block/indexheader/reader_pool.go
@@ -15,7 +15,6 @@ import (
 	"github.com/prometheus/prometheus/tsdb/index"
 	"go.uber.org/atomic"
 
-	"github.com/thanos-io/thanos/pkg/extprom"
 	"github.com/thanos-io/thanos/pkg/objstore"
 )
 
@@ -38,7 +37,7 @@ func NewReaderPool(logger log.Logger, lazyReaderEnabled bool, lazyReaderIdleTime
 		logger:                logger,
 		lazyReaderEnabled:     lazyReaderEnabled,
 		lazyReaderIdleTimeout: lazyReaderIdleTimeout,
-		lazyReaderMetrics:     NewLazyBinaryReaderMetrics(extprom.WrapRegistererWithPrefix("indexheader_pool_", reg)),
+		lazyReaderMetrics:     NewLazyBinaryReaderMetrics(reg),
 		readers:               make(map[*readerTracker]struct{}),
 		close:                 make(chan struct{}),
 	}