diff --git a/gps_client.py b/gps_client.py
index 49d8e08c..e5074232 100644
--- a/gps_client.py
+++ b/gps_client.py
@@ -13,10 +13,10 @@ import time
 
 session = gps.gps(mode=gps.WATCH_ENABLE)
 
-start = time.perf_timer()
+start = time.perf_counter()
 
 try:
-    while session.read() == 0 and ((time.perf_timer(0 - start)) < 1):
+    while session.read() == 0 and ((time.perf_counter(0 - start)) < 1):
         print(gps.MODE_SET)
         print(session.valid)
         if not (gps.MODE_SET & session.valid):