diff --git a/include/coreinit/systeminfo.h b/include/coreinit/systeminfo.h
index 2b840fd..00c7ab9 100644
--- a/include/coreinit/systeminfo.h
+++ b/include/coreinit/systeminfo.h
@@ -25,10 +25,6 @@ CHECK_OFFSET(OSSystemInfo, 0x0, clockSpeed);
 CHECK_OFFSET(OSSystemInfo, 0x8, baseTime);
 CHECK_SIZE(OSSystemInfo, 0x20);
 
-
-#define OSOneSecond ((OSGetSystemInfo()->clockSpeed) / 4)
-#define OSMilliseconds(val) ((((uint64_t)(val)) * (uint64_t)(OSOneSecond)) / 1000ull)
-
 OSSystemInfo *
 OSGetSystemInfo();
 
diff --git a/include/coreinit/time.h b/include/coreinit/time.h
index ac868ff..aed728d 100644
--- a/include/coreinit/time.h
+++ b/include/coreinit/time.h
@@ -33,6 +33,11 @@ CHECK_OFFSET(OSCalendarTime, 0x10, tm_mon);
 CHECK_OFFSET(OSCalendarTime, 0x14, tm_year);
 CHECK_SIZE(OSCalendarTime, 0x18);
 
+#define OSOneSecond ((OSGetSystemInfo()->clockSpeed) / 4)
+#define OSMilliseconds(val) ((((uint64_t)(val)) * (uint64_t)(OSOneSecond)) / 1000ull)
+#define OSMicroseconds(val) ((((uint64_t)(val)) * (uint64_t)(OSOneSecond)) / 1000000ull)
+#define OSNanoseconds(val) ((((uint64_t)(val)) * (uint64_t)(OSOneSecond)) / 1000000000ull)
+
 OSTime
 OSGetTime();