diff --git a/validation/data_validator_group.cpp b/validation/data_validator_group.cpp
index 921d37feb1..321231a486 100644
--- a/validation/data_validator_group.cpp
+++ b/validation/data_validator_group.cpp
@@ -41,6 +41,7 @@
 
 #include "data_validator_group.h"
 #include <ecl/ecl.h>
+#include <cfloat>
 
 DataValidatorGroup::DataValidatorGroup(unsigned siblings) :
 	_first(nullptr),