diff --git a/src/Cafe/OS/libs/coreinit/coreinit_Synchronization.cpp b/src/Cafe/OS/libs/coreinit/coreinit_Synchronization.cpp
index c144c384..e81cc577 100644
--- a/src/Cafe/OS/libs/coreinit/coreinit_Synchronization.cpp
+++ b/src/Cafe/OS/libs/coreinit/coreinit_Synchronization.cpp
@@ -73,8 +73,6 @@ namespace coreinit
 		}
 	}
 
-	uint64 coreinit_getOSTime();
-
 	bool OSWaitEventWithTimeout(OSEvent* event, uint64 timeout)
 	{
 		__OSLockScheduler();
@@ -95,14 +93,14 @@ namespace coreinit
 
 			// workaround for a bad implementation in some Unity games (like Qube Directors Cut, see FEventWiiU::Wait)
 			// where the the return value of OSWaitEventWithTimeout is ignored and instead the game measures the elapsed time to determine if a timeout occurred
-			timeout = timeout * 98ULL / 100ULL; // 98% (we want the function to return slightly before the actual timeout)
+			if (timeout < 0x00FFFFFFFFFFFFFFULL)
+				timeout = timeout * 98ULL / 100ULL; // 98% (we want the function to return slightly before the actual timeout)
 
 			WaitEventWithTimeoutData data;
 			data.thread = OSGetCurrentThread();
 			data.threadQueue = &event->threadQueue;
 			data.hasTimeout = false;
-
-			auto hostAlarm = coreinit::OSHostAlarmCreate(coreinit::coreinit_getOSTime() + coreinit::EspressoTime::ConvertNsToTimerTicks(timeout), 0, _OSWaitEventWithTimeoutHandler, &data);
+			auto hostAlarm = coreinit::OSHostAlarmCreate(OSGetTime() + coreinit::EspressoTime::ConvertNsToTimerTicks(timeout), 0, _OSWaitEventWithTimeoutHandler, &data);
 			event->threadQueue.queueAndWait(OSGetCurrentThread());
 			coreinit::OSHostAlarmDestroy(hostAlarm);
 			if (data.hasTimeout)
diff --git a/src/Cafe/OS/libs/coreinit/coreinit_Time.h b/src/Cafe/OS/libs/coreinit/coreinit_Time.h
index 3aa92b99..37bd5f88 100644
--- a/src/Cafe/OS/libs/coreinit/coreinit_Time.h
+++ b/src/Cafe/OS/libs/coreinit/coreinit_Time.h
@@ -40,12 +40,12 @@ namespace coreinit
 
 		inline TimerTicks ConvertNsToTimerTicks(uint64 ns)
 		{
-			return ((GetTimerClock() / 31250LL) * ((TimerTicks)ns) / 32000LL);
+			return static_cast<TimerTicks>((static_cast<uint64>(GetTimerClock()) / 31250ULL) * (ns) / 32000ULL);
 		}
 
 		inline TimerTicks ConvertMsToTimerTicks(uint64 ms)
 		{
-			return (TimerTicks)ms * GetTimerClock() / 1000LL;
+			return static_cast<TimerTicks>(ms * static_cast<uint64>(GetTimerClock()) / 1000ULL);
 		}
 	};