diff --git a/packages/flatpak/pwsp-wrapper.py b/packages/flatpak/pwsp-wrapper.py
index 4cba137..806163e 100755
--- a/packages/flatpak/pwsp-wrapper.py
+++ b/packages/flatpak/pwsp-wrapper.py
@@ -32,4 +32,4 @@ if __name__ == "__main__":
             if args.start:
                 subprocess.Popen("pwsp-daemon")
             elif args.kill:
-                subprocess.Popen(["pkill", "f", "pwsp-daemon"])
\ No newline at end of file
+                subprocess.Popen(["pkill", "-f", "pwsp-daemon"])
\ No newline at end of file