diff --git a/pkg/local_object_storage/blobstor/fstree/counter.go b/pkg/local_object_storage/blobstor/fstree/counter.go
index b5dbc9e409..3caee7ee16 100644
--- a/pkg/local_object_storage/blobstor/fstree/counter.go
+++ b/pkg/local_object_storage/blobstor/fstree/counter.go
@@ -2,6 +2,8 @@ package fstree
 
 import (
 	"sync"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 )
 
 // FileCounter used to count files in FSTree. The implementation must be thread-safe.
@@ -52,16 +54,11 @@ func (c *SimpleCounter) Dec(size uint64) {
 	c.mtx.Lock()
 	defer c.mtx.Unlock()
 
-	if c.count > 0 {
-		c.count--
-	} else {
-		panic("fstree.SimpleCounter: invalid count")
-	}
-	if c.size >= size {
-		c.size -= size
-	} else {
-		panic("fstree.SimpleCounter: invalid size")
-	}
+	assert.True(c.count > 0, "fstree.SimpleCounter: invalid count")
+	c.count--
+
+	assert.True(c.size >= size, "fstree.SimpleCounter: invalid size")
+	c.size -= size
 }
 
 func (c *SimpleCounter) CountSize() (uint64, uint64) {
diff --git a/pkg/local_object_storage/metabase/lock.go b/pkg/local_object_storage/metabase/lock.go
index f73c2b4f68..f4cb9e53bc 100644
--- a/pkg/local_object_storage/metabase/lock.go
+++ b/pkg/local_object_storage/metabase/lock.go
@@ -7,6 +7,7 @@ import (
 	"slices"
 	"time"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/internal/metaerr"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/local_object_storage/util/logicerr"
 	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
@@ -63,9 +64,7 @@ func (db *DB) Lock(ctx context.Context, cnr cid.ID, locker oid.ID, locked []oid.
 		return ErrReadOnlyMode
 	}
 
-	if len(locked) == 0 {
-		panic("empty locked list")
-	}
+	assert.False(len(locked) == 0, "empty locked list")
 
 	err := db.lockInternal(locked, cnr, locker)
 	success = err == nil
diff --git a/pkg/local_object_storage/metabase/util.go b/pkg/local_object_storage/metabase/util.go
index 80851f1c43..4ad83332bf 100644
--- a/pkg/local_object_storage/metabase/util.go
+++ b/pkg/local_object_storage/metabase/util.go
@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -278,9 +279,7 @@ func objectKey(obj oid.ID, key []byte) []byte {
 //
 // firstIrregularObjectType(tx, cnr, obj) usage allows getting object type.
 func firstIrregularObjectType(tx *bbolt.Tx, idCnr cid.ID, objs ...[]byte) objectSDK.Type {
-	if len(objs) == 0 {
-		panic("empty object list in firstIrregularObjectType")
-	}
+	assert.False(len(objs) == 0, "empty object list in firstIrregularObjectType")
 
 	var keys [2][1 + cidSize]byte
 
diff --git a/pkg/local_object_storage/writecache/limiter.go b/pkg/local_object_storage/writecache/limiter.go
index ddc4101be1..0e020b36eb 100644
--- a/pkg/local_object_storage/writecache/limiter.go
+++ b/pkg/local_object_storage/writecache/limiter.go
@@ -3,6 +3,8 @@ package writecache
 import (
 	"errors"
 	"sync"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/assert"
 )
 
 var errLimiterClosed = errors.New("acquire failed: limiter closed")
@@ -45,17 +47,11 @@ func (l *flushLimiter) release(size uint64) {
 	l.cond.L.Lock()
 	defer l.cond.L.Unlock()
 
-	if l.size >= size {
-		l.size -= size
-	} else {
-		panic("flushLimiter: invalid size")
-	}
+	assert.True(l.size >= size, "flushLimiter: invalid size")
+	l.size -= size
 
-	if l.count > 0 {
-		l.count--
-	} else {
-		panic("flushLimiter: invalid count")
-	}
+	assert.True(l.count > 0, "flushLimiter: invalid count")
+	l.count--
 
 	l.cond.Broadcast()
 }