1 files changed, 1 insertions, 1 deletions
diff --git a/Swiften/Parser/AttributeMap.h b/Swiften/Parser/AttributeMap.h
index 798649a..804d6aa 100644
--- a/Swiften/Parser/AttributeMap.h
+++ b/Swiften/Parser/AttributeMap.h
@@ -1,43 +1,43 @@
 /*
  * Copyright (c) 2010-2016 Isode Limited.
  * All rights reserved.
  * See the COPYING file for more information.
  */
 
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
-#include <boost/optional/optional_fwd.hpp>
+#include <boost/optional/optional.hpp>
 
 #include <Swiften/Base/API.h>
 #include <Swiften/Parser/Attribute.h>
 
 namespace Swift {
     class SWIFTEN_API AttributeMap {
         public:
             class Entry {
                 public:
                     Entry(const Attribute& attribute, const std::string& value) : attribute(attribute), value(value) {
                     }
 
                     const Attribute& getAttribute() const {
                         return attribute;
                     }
 
                     const std::string& getValue() const {
                         return value;
                     }
 
                 private:
                     Attribute attribute;
                     std::string value;
             };
 
             AttributeMap();
 
             std::string getAttribute(const std::string& attribute, const std::string& ns = "") const;
             bool getBoolAttribute(const std::string& attribute, bool defaultValue = false) const;
             boost::optional<std::string> getAttributeValue(const std::string&) const;