diff --git a/qt/widgets/mplcpp/CMakeLists.txt b/qt/widgets/mplcpp/CMakeLists.txt
index fb3178b299e6b6346842f2eca7b85eadb3506157..97284a2caf175a33c70abf64933f7a1a75b88291 100644
--- a/qt/widgets/mplcpp/CMakeLists.txt
+++ b/qt/widgets/mplcpp/CMakeLists.txt
@@ -37,6 +37,7 @@ mtd_add_qt_library (TARGET_NAME MantidQtWidgetsMplCpp
   INCLUDE_DIRS
       inc
       ../../../Framework/PythonInterface/core/inc
+      ${Boost_INCLUDE_DIRS}
       ${PYTHON_INCLUDE_PATH}
       ${PYTHON_NUMPY_INCLUDE_DIR}
   LINK_LIBS
diff --git a/qt/widgets/mplcpp/test/ArtistTest.h b/qt/widgets/mplcpp/test/ArtistTest.h
index e0c48020ba379035ca9ed72ebd455f383001a808..f2a6f4a60ca7078242d14f5f2f75c12efd05fa74 100644
--- a/qt/widgets/mplcpp/test/ArtistTest.h
+++ b/qt/widgets/mplcpp/test/ArtistTest.h
@@ -29,7 +29,8 @@ public:
   // ----------------- failure tests ---------------------
 
   void testConstructWithNonArtistThrowsInvalidArgument() {
-    TS_ASSERT_THROWS(Artist(Python::Object()), std::invalid_argument);
+    Python::Object none;
+    TS_ASSERT_THROWS(Artist artist(none), std::invalid_argument);
   }
 };