diff --git a/indra/llcommon/llfasttimer_class.cpp b/indra/llcommon/llfasttimer_class.cpp
index 20f64d1a1..2d1297344 100644
--- a/indra/llcommon/llfasttimer_class.cpp
+++ b/indra/llcommon/llfasttimer_class.cpp
@@ -307,11 +307,11 @@ std::string LLFastTimer::NamedTimer::getToolTip(S32 history_idx)
 	if (history_idx < 0)
 	{
 		// by default, show average number of call
-		return llformat("%s (%d ms, %d calls)", getName().c_str(), (S32)(getCountAverage() * ms_multiplier), (S32)getCallAverage());
+		return llformat("%s (%.2f ms, %d calls)", getName().c_str(), (F32)((F32)getCountAverage() * ms_multiplier), (S32)getCallAverage());
 	}
 	else
 	{
-		return llformat("%s (%d ms, %d calls)", getName().c_str(), (S32)(getHistoricalCount(history_idx) * ms_multiplier), (S32)getHistoricalCalls(history_idx));
+		return llformat("%s (%.2f ms, %d calls)", getName().c_str(), (F32)((F32)getHistoricalCount(history_idx) * ms_multiplier), (S32)getHistoricalCalls(history_idx));
 	}
 }