diff --git a/pkg/local_object_storage/blobstor/fstree/fstree_write_generic.go b/pkg/local_object_storage/blobstor/fstree/fstree_write_generic.go
index 07a618b0ac..6d633dad66 100644
--- a/pkg/local_object_storage/blobstor/fstree/fstree_write_generic.go
+++ b/pkg/local_object_storage/blobstor/fstree/fstree_write_generic.go
@@ -67,12 +67,9 @@ func (w *genericWriter) writeAndRename(tmpPath, p string, data []byte) error {
 	err := w.writeFile(tmpPath, data)
 	if err != nil {
 		var pe *fs.PathError
-		if errors.As(err, &pe) {
-			switch pe.Err {
-			case syscall.ENOSPC:
-				err = common.ErrNoSpace
-				_ = os.RemoveAll(tmpPath)
-			}
+		if errors.As(err, &pe) && errors.Is(pe.Err, syscall.ENOSPC) {
+			err = common.ErrNoSpace
+			_ = os.RemoveAll(tmpPath)
 		}
 		return err
 	}
diff --git a/pkg/services/control/ir/server/server.go b/pkg/services/control/ir/server/server.go
index c2a4f88a69..0cfca71c15 100644
--- a/pkg/services/control/ir/server/server.go
+++ b/pkg/services/control/ir/server/server.go
@@ -35,8 +35,7 @@ func panicOnPrmValue(n string, v any) {
 // the parameterized private key.
 func New(prm Prm, netmapClient *netmap.Client, containerClient *container.Client, opts ...Option) *Server {
 	// verify required parameters
-	switch {
-	case prm.healthChecker == nil:
+	if prm.healthChecker == nil {
 		panicOnPrmValue("health checker", prm.healthChecker)
 	}
 
diff --git a/pkg/util/http/server.go b/pkg/util/http/server.go
index 923412a7f2..2589ab786c 100644
--- a/pkg/util/http/server.go
+++ b/pkg/util/http/server.go
@@ -76,8 +76,7 @@ func New(prm HTTPSrvPrm, opts ...Option) *Server {
 		o(c)
 	}
 
-	switch {
-	case c.shutdownTimeout <= 0:
+	if c.shutdownTimeout <= 0 {
 		panicOnOptValue("shutdown timeout", c.shutdownTimeout)
 	}