diff --git a/xapian-core/api/omdocument.cc b/xapian-core/api/omdocument.cc

index 1134e9fc..62689deb 100644

--- a/xapian-core/api/omdocument.cc

+++ b/xapian-core/api/omdocument.cc

@@ -38,6 +38,7 @@

 #include <xapian/valueiterator.h>

 #include <algorithm>

+#include <limits>

 #include <string>

 using namespace std;