diff --git a/libwvdrmengine/cdm/util/test/test_sleep.cpp b/libwvdrmengine/cdm/util/test/test_sleep.cpp
index 439a46d5..f52e5715 100644
--- a/libwvdrmengine/cdm/util/test/test_sleep.cpp
+++ b/libwvdrmengine/cdm/util/test/test_sleep.cpp
@@ -30,7 +30,7 @@ TestSleep::CallBack* TestSleep::callback_ = nullptr;
 int TestSleep::total_clock_rollback_seconds_ = 0;
 
 void TestSleep::Sleep(unsigned int seconds) {
-  int64_t milliseconds = 1000 * seconds;
+  int64_t milliseconds = 1000 * static_cast<int64_t>(seconds);
   if (real_sleep_) {
     // This next bit of logic is to avoid slow drift apart of the real clock and
     // the fake clock.  We compute how far from the real clock has advanced in
@@ -40,7 +40,8 @@ void TestSleep::Sleep(unsigned int seconds) {
     static const auto start_real = std::chrono::system_clock().now();
     sleep(seconds);
     const auto now_real = std::chrono::system_clock().now();
-    const int64_t rollback_adjustment = 1000 * total_clock_rollback_seconds_;
+    const int64_t rollback_adjustment =
+        1000 * static_cast<int64_t>(total_clock_rollback_seconds_);
     const int64_t total_real =
         (now_real - start_real) / std::chrono::milliseconds(1) +
         rollback_adjustment;
@@ -129,7 +130,9 @@ bool TestSleep::RollbackSystemTime(int seconds) {
   // For both real and fake sleep we still update the callback and we still keep
   // track of the total amount of time slept.
   total_clock_rollback_seconds_ += seconds;
-  if (callback_ != nullptr) callback_->ElapseTime(-1000 * seconds);
+  if (callback_ != nullptr) {
+    callback_->ElapseTime(-1000 * static_cast<int64_t>(seconds));
+  }
   return true;
 }