Index: ignition-math6_6.4.0/src/RollingMean.cc
===================================================================
--- ignition-math6_6.4.0.orig/src/RollingMean.cc
+++ ignition-math6_6.4.0/src/RollingMean.cc
@@ -17,6 +17,7 @@
 
 #include <numeric>
 #include <deque>
+#include <limits>
 #include "ignition/math/RollingMean.hh"
 
 using namespace ignition::math;