diff --git a/pkg/store/cache/inmemory.go b/pkg/store/cache/inmemory.go
index 739d73b5bb..5856fba028 100644
--- a/pkg/store/cache/inmemory.go
+++ b/pkg/store/cache/inmemory.go
@@ -163,7 +163,7 @@ func NewInMemoryIndexCacheWithConfig(logger log.Logger, reg prometheus.Registere
 
 	// Initialize LRU cache with a high size limit since we will manage evictions ourselves
 	// based on stored size using `RemoveOldest` method.
-	l, err := lru.NewLRU(math.MaxInt64, c.onEvict)
+	l, err := lru.NewLRU(math.MaxInt32, c.onEvict)
 	if err != nil {
 		return nil, err
 	}
@@ -173,7 +173,7 @@ func NewInMemoryIndexCacheWithConfig(logger log.Logger, reg prometheus.Registere
 		"msg", "created in-memory index cache",
 		"maxItemSizeBytes", c.maxItemSizeBytes,
 		"maxSizeBytes", c.maxSizeBytes,
-		"maxItems", "math.MaxInt64",
+		"maxItems", "math.MaxInt32",
 	)
 	return c, nil
 }