diff --git a/get_clients.go b/get_clients.go
index d26cd12..f67f756 100644
--- a/get_clients.go
+++ b/get_clients.go
@@ -3,6 +3,8 @@ package hypr
 import (
 	"encoding/json"
 	"os/exec"
+
+	"git.milar.in/milarin/slices"
 )
 
 func GetWindows() ([]*Window, error) {
@@ -26,5 +28,9 @@ func GetWindows() ([]*Window, error) {
 		return nil, err
 	}
 
+	windows = slices.Filter(windows, func(w *Window) bool {
+		return w.PID != -1
+	})
+
 	return windows, nil
 }