diff --git a/ansi/mouse.go b/ansi/mouse.go
index 09dfe62b..eec77d41 100644
--- a/ansi/mouse.go
+++ b/ansi/mouse.go
@@ -83,8 +83,8 @@ func (b MouseButton) String() string {
 //
 //   - The eighth bit indicates additional buttons.
 //
-// If button is [MouseRelease], and motion is false, this returns a release
-// event. If button is undefined, this function returns 0xff.
+// If button is [MouseNone], and motion is false, this returns a release event.
+// If button is undefined, this function returns 0xff.
 func (b MouseButton) Button(motion, shift, alt, ctrl bool) (m byte) {
 	// mouse bit shifts
 	const (
@@ -98,7 +98,7 @@ func (b MouseButton) Button(motion, shift, alt, ctrl bool) (m byte) {
 		bitsMask = 0b0000_0011
 	)
 
-	if b == MouseRelease {
+	if b == MouseNone {
 		m = bitsMask
 	} else if b >= MouseLeft && b <= MouseRight {
 		m = byte(b - MouseLeft)
diff --git a/ansi/mouse_test.go b/ansi/mouse_test.go
index 35abfc08..542651e7 100644
--- a/ansi/mouse_test.go
+++ b/ansi/mouse_test.go
@@ -16,9 +16,15 @@ func TestMouseButton(t *testing.T) {
 	cases := []test{
 		{
 			name: "mouse release",
-			btn:  MouseRelease,
+			btn:  MouseNone,
 			want: 0b0000_0011,
 		},
+		{
+			name: "mouse release with ctrl",
+			btn:  MouseNone,
+			ctrl: true,
+			want: 0b0001_0011,
+		},
 		{
 			name: "mouse left",
 			btn:  MouseLeft,
@@ -177,7 +183,7 @@ func TestMouseSgr(t *testing.T) {
 		},
 		{
 			name:    "mouse release",
-			btn:     MouseRelease.Button(false, false, false, false),
+			btn:     MouseNone.Button(false, false, false, false),
 			x:       5,
 			y:       5,
 			release: true,