--- src/synfig/time.cpp 2015-07-09 09:33:03.000000000 +0200
+++ src/synfig/time.cpp 2015-10-20 02:51:23.394773482 +0200
@@ -319,5 +319,5 @@
bool
Time::is_valid()const
{
- return !isnan(value_);
+ return !std::isnan(value_);
}