diff --git a/pkg/pty/pty.go b/pkg/pty/pty.go
index 853b8a4..e4853f6 100644
--- a/pkg/pty/pty.go
+++ b/pkg/pty/pty.go
@@ -11,6 +11,8 @@ import (
 	opty "github.com/creack/pty"
 )
 
+var _ IPty = (*Pty)(nil)
+
 var defaultShells = []string{"zsh", "fish", "bash", "sh"}
 
 type Pty struct {
@@ -79,5 +81,3 @@ func (pty *Pty) Close() error {
 	}
 	return pty.killChildProcess(pty.cmd)
 }
-
-var _ IPty = &Pty{}
diff --git a/pkg/pty/pty_windows.go b/pkg/pty/pty_windows.go
index 18979fb..4f34440 100644
--- a/pkg/pty/pty_windows.go
+++ b/pkg/pty/pty_windows.go
@@ -19,6 +19,9 @@ import (
 	"github.com/shirou/gopsutil/v4/host"
 )
 
+var _ IPty = (*winPTY)(nil)
+var _ IPty = (*conPty)(nil)
+
 var isWin10 = VersionCheck()
 
 type winPTY struct {
@@ -164,6 +167,3 @@ func (c *conPty) Close() error {
 	}
 	return nil
 }
-
-var _ IPty = &winPTY{}
-var _ IPty = &conPty{}
diff --git a/pkg/pty/pty_windowsarm.go b/pkg/pty/pty_windowsarm.go
index 06bb425..6c44f09 100644
--- a/pkg/pty/pty_windowsarm.go
+++ b/pkg/pty/pty_windowsarm.go
@@ -10,6 +10,8 @@ import (
 	"github.com/UserExistsError/conpty"
 )
 
+var _ IPty = (*Pty)(nil)
+
 type Pty struct {
 	tty *conpty.ConPty
 }
@@ -61,5 +63,3 @@ func (pty *Pty) Close() error {
 	}
 	return nil
 }
-
-var _ IPty = &Pty{}