diff --git a/y2015/autonomous/auto_main.cc b/y2015/autonomous/auto_main.cc
index d9437d1..c5e07d6 100644
--- a/y2015/autonomous/auto_main.cc
+++ b/y2015/autonomous/auto_main.cc
@@ -1,13 +1,12 @@
 #include <stdio.h>
+#include <chrono>
 
+#include "aos/common/logging/logging.h"
 #include "aos/common/time.h"
 #include "aos/linux_code/init.h"
-#include "aos/common/logging/logging.h"
 #include "frc971/autonomous/auto.q.h"
 #include "y2015/autonomous/auto.h"
 
-using ::aos::time::Time;
-
 int main(int /*argc*/, char * /*argv*/[]) {
   ::aos::Init(-1);
 
@@ -24,12 +23,15 @@
       LOG(INFO, "Got another auto packet\n");
     }
     LOG(INFO, "Starting auto mode\n");
-    ::aos::time::Time start_time = ::aos::time::Time::Now();
+    ::aos::monotonic_clock::time_point start_time =
+        ::aos::monotonic_clock::now();
     ::y2015::autonomous::HandleAuto();
 
-    ::aos::time::Time elapsed_time = ::aos::time::Time::Now() - start_time;
+    auto elapsed_time = ::aos::monotonic_clock::now() - start_time;
     LOG(INFO, "Auto mode exited in %f, waiting for it to finish.\n",
-        elapsed_time.ToSeconds());
+        ::std::chrono::duration_cast<::std::chrono::duration<double>>(
+            elapsed_time)
+            .count());
     while (::frc971::autonomous::autonomous->run_auto) {
       ::frc971::autonomous::autonomous.FetchNextBlocking();
       LOG(INFO, "Got another auto packet\n");