diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9d284f6fc..94018e357 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ Changelog for FrostFS Node
 ### Changed
 ### Fixed
 - Take network settings into account during netmap contract update (#100)
+- Read config files from dir even if config file not provided via `--config` for node (#238)
 
 ### Removed
 ### Updated
diff --git a/cmd/frostfs-node/config/configdir_test.go b/cmd/frostfs-node/config/configdir_test.go
new file mode 100644
index 000000000..2c3255670
--- /dev/null
+++ b/cmd/frostfs-node/config/configdir_test.go
@@ -0,0 +1,24 @@
+package config
+
+import (
+	"os"
+	"path"
+	"testing"
+
+	"github.com/spf13/cast"
+	"github.com/stretchr/testify/require"
+)
+
+func TestConfigDir(t *testing.T) {
+	dir := t.TempDir()
+
+	cfgFileName0 := path.Join(dir, "cfg_00.json")
+	cfgFileName1 := path.Join(dir, "cfg_01.yml")
+
+	require.NoError(t, os.WriteFile(cfgFileName0, []byte(`{"storage":{"shard_pool_size":15}}`), 0777))
+	require.NoError(t, os.WriteFile(cfgFileName1, []byte("logger:\n  level: debug"), 0777))
+
+	c := New(Prm{}, WithConfigDir(dir))
+	require.Equal(t, "debug", cast.ToString(c.Sub("logger").Value("level")))
+	require.EqualValues(t, 15, cast.ToUint32(c.Sub("storage").Value("shard_pool_size")))
+}
diff --git a/config/example/node.env b/config/example/node.env
index 9a1a8b052..a4088f75a 100644
--- a/config/example/node.env
+++ b/config/example/node.env
@@ -187,4 +187,4 @@ FROSTFS_STORAGE_SHARD_1_GC_REMOVER_SLEEP_INTERVAL=5m
 
 FROSTFS_TRACING_ENABLED=true
 FROSTFS_TRACING_ENDPOINT="localhost"
-FROSTFS_TRACING_EXPORTER="otlp_grpc"
\ No newline at end of file
+FROSTFS_TRACING_EXPORTER="otlp_grpc"
diff --git a/config/example/node.yaml b/config/example/node.yaml
index e3b41d413..0d71f0fd2 100644
--- a/config/example/node.yaml
+++ b/config/example/node.yaml
@@ -219,4 +219,3 @@ tracing:
   enabled: true
   exporter: "otlp_grpc"
   endpoint: "localhost"
-  
\ No newline at end of file
diff --git a/internal/logs/logs.go b/internal/logs/logs.go
index 83acedfb4..062538747 100644
--- a/internal/logs/logs.go
+++ b/internal/logs/logs.go
@@ -490,7 +490,7 @@ const (
 	NetmapCantInvokeNetmapUpdatePeer                                        = "can't invoke netmap.UpdatePeer"                                            // Error in ../node/pkg/innerring/processors/netmap/process_peers.go
 	NetmapNonAlphabetModeIgnoreRemoveNodeFromSubnetNotification             = "non alphabet mode, ignore remove node from subnet notification"            // Info in ../node/pkg/innerring/processors/netmap/process_peers.go
 	NetmapCouldNotGetNetworkMapCandidates                                   = "could not get network map candidates"                                      // Warn in ../node/pkg/innerring/processors/netmap/process_peers.go
-	NetmapCouldNotUnmarshalSubnetId                                         = "could not unmarshal subnet id"                                             // Warn in ../node/pkg/innerring/processors/netmap/process_peers.go
+	NetmapCouldNotUnmarshalSubnetID                                         = "could not unmarshal subnet id"                                             // Warn in ../node/pkg/innerring/processors/netmap/process_peers.go
 	NetmapGotZeroSubnetInRemoveNodeNotification                             = "got zero subnet in remove node notification"                               // Warn in ../node/pkg/innerring/processors/netmap/process_peers.go
 	NetmapCouldNotIterateOverSubnetworksOfTheNode                           = "could not iterate over subnetworks of the node"                            // Warn in ../node/pkg/innerring/processors/netmap/process_peers.go
 	NetmapCouldNotInvokeNetmapUpdateState                                   = "could not invoke netmap.UpdateState"                                       // Error in ../node/pkg/innerring/processors/netmap/process_peers.go
diff --git a/pkg/innerring/processors/netmap/process_peers.go b/pkg/innerring/processors/netmap/process_peers.go
index ffaad3b4e..130d08568 100644
--- a/pkg/innerring/processors/netmap/process_peers.go
+++ b/pkg/innerring/processors/netmap/process_peers.go
@@ -159,7 +159,7 @@ func (np *Processor) processRemoveSubnetNode(ev subnetEvent.RemoveNode) {
 
 	err = subnetToRemoveFrom.Unmarshal(rawSubnet)
 	if err != nil {
-		np.log.Warn(logs.NetmapCouldNotUnmarshalSubnetId,
+		np.log.Warn(logs.NetmapCouldNotUnmarshalSubnetID,
 			zap.Error(err),
 		)
 		return
diff --git a/pkg/util/config/dir.go b/pkg/util/config/dir.go
index a74992d19..0379fe268 100644
--- a/pkg/util/config/dir.go
+++ b/pkg/util/config/dir.go
@@ -1,6 +1,7 @@
 package config
 
 import (
+	"fmt"
 	"os"
 	"path"
 
@@ -20,7 +21,7 @@ func ReadConfigDir(v *viper.Viper, configDir string) error {
 			continue
 		}
 		ext := path.Ext(entry.Name())
-		if ext != ".yaml" && ext != ".yml" {
+		if ext != ".yaml" && ext != ".yml" && ext != ".json" {
 			continue
 		}
 
@@ -33,22 +34,15 @@ func ReadConfigDir(v *viper.Viper, configDir string) error {
 }
 
 // mergeConfig reads config file and merge its content with current viper.
-func mergeConfig(v *viper.Viper, fileName string) (err error) {
-	var cfgFile *os.File
-	cfgFile, err = os.Open(fileName)
+func mergeConfig(v *viper.Viper, fileName string) error {
+	cv := viper.New()
+	cv.SetConfigFile(fileName)
+	err := cv.ReadInConfig()
 	if err != nil {
-		return err
+		return fmt.Errorf("failed to read config: %w", err)
 	}
-
-	defer func() {
-		errClose := cfgFile.Close()
-		if err == nil {
-			err = errClose
-		}
-	}()
-
-	if err = v.MergeConfig(cfgFile); err != nil {
-		return err
+	if err = v.MergeConfigMap(cv.AllSettings()); err != nil {
+		return fmt.Errorf("failed to merge config: %w", err)
 	}
 
 	return nil