diff --git a/src/backoff_entry.cc b/src/backoff_entry.cc
index 6b99d79..7efc33b 100644
--- a/src/backoff_entry.cc
+++ b/src/backoff_entry.cc
@@ -74,7 +74,7 @@
 
   base::TimeTicks now = ImplGetTimeNow();
 
-  int64 unused_since_ms =
+  int64_t unused_since_ms =
       (now - exponential_backoff_release_time_).InMilliseconds();
 
   // Release time is further than now, we are managing it.
@@ -152,7 +152,7 @@
 
   // Decide between maximum release time and calculated release time, accounting
   // for overflow with both.
-  int64 release_time_us =
+  int64_t release_time_us =
       std::min(calculated_release_time_us.ValueOrDefault(kMaxTime),
                maximum_release_time_us.ValueOrDefault(kMaxTime));