diff --git a/cast_test.cpp b/cast_test.cpp
index e3ca7ea..091cfe6 100644
--- a/cast_test.cpp
+++ b/cast_test.cpp
@@ -16,6 +16,7 @@
 
 #include <iostream>
 #include <climits>
+#include <cfloat>   // for DBL_MAX (Peter Schmid)
 #include <boost/cast.hpp>
 
 #  if SCHAR_MAX == LONG_MAX