diff --git a/Source/Time/AuClock.cpp b/Source/Time/AuClock.cpp
index 5ecbc979..48f862de 100644
--- a/Source/Time/AuClock.cpp
+++ b/Source/Time/AuClock.cpp
@@ -22,7 +22,7 @@
             {
                 mach_timebase_info_data_t timebase;
                 mach_timebase_info(&timebase);
-                uFrequency = (timebase.denom * 1'000'000'000.0) / timebase.numer;
+                uFrequency = (double(timebase.denom) * 1'000'000'000.0) / double(timebase.numer);
             });
             return uFrequency;
         }