diff --git a/tests/hwsim/hostapd.py b/tests/hwsim/hostapd.py
index b4ebbdbf6..67e8a7fb8 100644
--- a/tests/hwsim/hostapd.py
+++ b/tests/hwsim/hostapd.py
@@ -279,7 +279,7 @@ class Hostapd:
             state = sta['hostapdWPAPTKState']
             if state == "11":
                 return
-            os.sleep(0.1)
+            time.sleep(0.1)
             timeout -= 0.1
         raise Exception("Timeout while waiting for PTKINITDONE")