diff --git a/enblend/src/minimizer.cc b/enblend/src/minimizer.cc
index ce40202..82ae526 100644
--- a/enblend/src/minimizer.cc
+++ b/enblend/src/minimizer.cc
@@ -22,6 +22,7 @@
 
 #include "minimizer.h"
 
+#include <limits>
 
 Minimizer::Minimizer(size_t a_dimension) :
     dimension_(a_dimension),