diff --git a/internal/cmd/cache.go b/internal/cmd/cache.go
index 9ec8387..067387d 100644
--- a/internal/cmd/cache.go
+++ b/internal/cmd/cache.go
@@ -25,9 +25,11 @@ type cacheConfig struct {
 // c must be valid.
 func (c *cacheConfig) toInternal() (conf *dnssvc.CacheConfig) {
 	return &dnssvc.CacheConfig{
-		Enabled:    c.Enabled,
-		Size:       c.Size,
-		ClientSize: c.ClientSize,
+		Enabled: c.Enabled,
+		// #nosec G115 -- The value is validated to not exceed [math.MaxInt].
+		Size: int(c.Size),
+		// #nosec G115 -- The value is validated to not exceed [math.MaxInt].
+		ClientSize: int(c.ClientSize),
 	}
 }
 
diff --git a/internal/dnssvc/cache.go b/internal/dnssvc/cache.go
index 003f057..bd20d3e 100644
--- a/internal/dnssvc/cache.go
+++ b/internal/dnssvc/cache.go
@@ -1,17 +1,19 @@
 package dnssvc
 
-import "github.com/c2h5oh/datasize"
-
 // CacheConfig is the configuration for the DNS results cache.
 type CacheConfig struct {
 	// Enabled specifies if the cache should be used.
 	Enabled bool
 
 	// Size is the maximum size of the common cache.
-	Size datasize.ByteSize
+	//
+	// TODO(e.burkov):  Make it a [datasize.ByteSize] when dnsproxy uses it.
+	Size int
 
 	// ClientSize is the maximum size of each per-client cache.
-	ClientSize datasize.ByteSize
+	//
+	// TODO(e.burkov):  Make it a [datasize.ByteSize] when dnsproxy uses it.
+	ClientSize int
 }
 
 // TODO(e.burkov):  Add tests.
diff --git a/internal/dnssvc/clientstorage.go b/internal/dnssvc/clientstorage.go
index 782f251..4be964a 100644
--- a/internal/dnssvc/clientstorage.go
+++ b/internal/dnssvc/clientstorage.go
@@ -17,9 +17,7 @@ func (confs upstreamConfigs) clients(cacheConf *CacheConfig) (clients []*client)
 			conf: proxy.NewCustomUpstreamConfig(
 				conf,
 				cacheConf.Enabled,
-				// #nosec G115 -- The value is validated to be less or equal to
-				// [math.MaxInt].
-				int(cacheConf.ClientSize),
+				cacheConf.ClientSize,
 				false,
 			),
 			prefix: cli,
diff --git a/internal/dnssvc/dnssvc.go b/internal/dnssvc/dnssvc.go
index 1a4456b..6920fca 100644
--- a/internal/dnssvc/dnssvc.go
+++ b/internal/dnssvc/dnssvc.go
@@ -117,10 +117,8 @@ func newProxyConfig(
 		UsePrivateRDNS:            private != nil,
 		Fallbacks:                 falls,
 		TrustedProxies:            trusted,
-		// #nosec G115 -- The value is validated to be less or equal to
-		// [math.MaxInt].
-		CacheSizeBytes: int(conf.Cache.Size),
-		CacheEnabled:   conf.Cache.Enabled,
+		CacheSizeBytes:            conf.Cache.Size,
+		CacheEnabled:              conf.Cache.Enabled,
 	}, ups.clients(conf.Cache), nil
 }