diff --git a/flash.py b/flash.py
index fd19a6f..f80d595 100755
--- a/flash.py
+++ b/flash.py
@@ -60,8 +60,8 @@ def flash(dev):
             os.mkdir("ssh")
             print(f"changing dir to {PWD}")
             os.chdir(PWD)
-            print(f"copying wpa_supplicant to {tempdir}")
-            copyfile("wpa_supplicant.conf", tempdir)
+            print(f"copying wpa_supplicant to f"{tempdir}/"}")
+            copyfile("wpa_supplicant.conf", f"{tempdir}/")
             print("unmounting")
             subprocess.run(umount_cmd)