diff --git a/cmd/gtrace/writer.go b/cmd/gtrace/writer.go
index 83acefd..351c6dc 100644
--- a/cmd/gtrace/writer.go
+++ b/cmd/gtrace/writer.go
@@ -173,6 +173,9 @@ func (w *Writer) typeImports(dst []dep, t types.Type) []dep {
 	if p, ok := t.(*types.Pointer); ok {
 		return w.typeImports(dst, p.Elem())
 	}
+	if p, ok := t.(*types.Slice); ok {
+		return w.typeImports(dst, p.Elem())
+	}
 	n, ok := t.(*types.Named)
 	if !ok {
 		return dst
diff --git a/test/test_imports_pointer.go b/test/test_imports_pointer.go
new file mode 100644
index 0000000..35f3ffe
--- /dev/null
+++ b/test/test_imports_pointer.go
@@ -0,0 +1,13 @@
+package test
+
+import "github.com/gobwas/gtrace/test/internal"
+
+//go:generate gtrace -v
+
+//gtrace:gen
+//gtrace:set shortcut
+// NOTE: must compile without unused imports error.
+type TracePointer struct {
+	OnSomethingA func(Type)
+	OnSomethingB func(*internal.Type)
+}
diff --git a/test/test_imports_pointer_gtrace.go b/test/test_imports_pointer_gtrace.go
new file mode 100644
index 0000000..8554eb9
--- /dev/null
+++ b/test/test_imports_pointer_gtrace.go
@@ -0,0 +1,68 @@
+// Code generated by gtrace. DO NOT EDIT.
+
+package test
+
+import (
+	"bytes"
+
+	"github.com/gobwas/gtrace/test/internal"
+)
+
+// Compose returns a new TracePointer which has functional fields composed
+// both from t and x.
+func (t TracePointer) Compose(x TracePointer) (ret TracePointer) {
+	switch {
+	case t.OnSomethingA == nil:
+		ret.OnSomethingA = x.OnSomethingA
+	case x.OnSomethingA == nil:
+		ret.OnSomethingA = t.OnSomethingA
+	default:
+		h1 := t.OnSomethingA
+		h2 := x.OnSomethingA
+		ret.OnSomethingA = func(t Type) {
+			h1(t)
+			h2(t)
+		}
+	}
+	switch {
+	case t.OnSomethingB == nil:
+		ret.OnSomethingB = x.OnSomethingB
+	case x.OnSomethingB == nil:
+		ret.OnSomethingB = t.OnSomethingB
+	default:
+		h1 := t.OnSomethingB
+		h2 := x.OnSomethingB
+		ret.OnSomethingB = func(t *internal.Type) {
+			h1(t)
+			h2(t)
+		}
+	}
+	return ret
+}
+func (t TracePointer) onSomethingA(t1 Type) {
+	fn := t.OnSomethingA
+	if fn == nil {
+		return
+	}
+	fn(t1)
+}
+func (t TracePointer) onSomethingB(t1 *internal.Type) {
+	fn := t.OnSomethingB
+	if fn == nil {
+		return
+	}
+	fn(t1)
+}
+func tracePointerOnSomethingA(t TracePointer, e Embeded, s string, integer int, boolean bool, e1 error, r bytes.Reader) {
+	var p Type
+	p.Embeded = e
+	p.String = s
+	p.Integer = integer
+	p.Boolean = boolean
+	p.Error = e1
+	p.Reader = r
+	t.onSomethingA(p)
+}
+func tracePointerOnSomethingB(t TracePointer, t1 *internal.Type) {
+	t.onSomethingB(t1)
+}
diff --git a/test/test_imports_slice.go b/test/test_imports_slice.go
new file mode 100644
index 0000000..74bbdd8
--- /dev/null
+++ b/test/test_imports_slice.go
@@ -0,0 +1,13 @@
+package test
+
+import "github.com/gobwas/gtrace/test/internal"
+
+//go:generate gtrace -v
+
+//gtrace:gen
+//gtrace:set shortcut
+// NOTE: must compile without unused imports error.
+type TraceArray struct {
+	OnSomethingA func(Type)
+	OnSomethingB func([]internal.Type)
+}
diff --git a/test/test_imports_slice_gtrace.go b/test/test_imports_slice_gtrace.go
new file mode 100644
index 0000000..cf4e997
--- /dev/null
+++ b/test/test_imports_slice_gtrace.go
@@ -0,0 +1,68 @@
+// Code generated by gtrace. DO NOT EDIT.
+
+package test
+
+import (
+	"bytes"
+
+	"github.com/gobwas/gtrace/test/internal"
+)
+
+// Compose returns a new TraceArray which has functional fields composed
+// both from t and x.
+func (t TraceArray) Compose(x TraceArray) (ret TraceArray) {
+	switch {
+	case t.OnSomethingA == nil:
+		ret.OnSomethingA = x.OnSomethingA
+	case x.OnSomethingA == nil:
+		ret.OnSomethingA = t.OnSomethingA
+	default:
+		h1 := t.OnSomethingA
+		h2 := x.OnSomethingA
+		ret.OnSomethingA = func(t Type) {
+			h1(t)
+			h2(t)
+		}
+	}
+	switch {
+	case t.OnSomethingB == nil:
+		ret.OnSomethingB = x.OnSomethingB
+	case x.OnSomethingB == nil:
+		ret.OnSomethingB = t.OnSomethingB
+	default:
+		h1 := t.OnSomethingB
+		h2 := x.OnSomethingB
+		ret.OnSomethingB = func(t []internal.Type) {
+			h1(t)
+			h2(t)
+		}
+	}
+	return ret
+}
+func (t TraceArray) onSomethingA(t1 Type) {
+	fn := t.OnSomethingA
+	if fn == nil {
+		return
+	}
+	fn(t1)
+}
+func (t TraceArray) onSomethingB(t1 []internal.Type) {
+	fn := t.OnSomethingB
+	if fn == nil {
+		return
+	}
+	fn(t1)
+}
+func traceArrayOnSomethingA(t TraceArray, e Embeded, s string, integer int, boolean bool, e1 error, r bytes.Reader) {
+	var p Type
+	p.Embeded = e
+	p.String = s
+	p.Integer = integer
+	p.Boolean = boolean
+	p.Error = e1
+	p.Reader = r
+	t.onSomethingA(p)
+}
+func traceArrayOnSomethingB(t TraceArray, t1 []internal.Type) {
+	t.onSomethingB(t1)
+}