diff --git a/cmake/modules/BuildQColorWidgets.cmake b/cmake/modules/BuildQColorWidgets.cmake
--- a/cmake/modules/BuildQColorWidgets.cmake
+++ b/cmake/modules/BuildQColorWidgets.cmake
@@ -22,6 +22,7 @@ include(ExternalProject)
 ExternalProject_Add(QCW
   PREFIX qcw
   GIT_REPOSITORY https://github.com/mbasaglia/Qt-Color-Widgets
+  PATCH_COMMAND patch -p1 -i ${CMAKE_CURRENT_LIST_DIR}/qt_5_2_moc_creation_namespace_fix.diff
   INSTALL_COMMAND "")
 
 ExternalProject_Get_Property(QCW binary_dir source_dir)
diff --git a/cmake/modules/qt_5_2_moc_creation_namespace_fix.diff b/cmake/modules/qt_5_2_moc_creation_namespace_fix.diff
new file mode 100644
--- /dev/null
+++ b/cmake/modules/qt_5_2_moc_creation_namespace_fix.diff
@@ -0,0 +1,39 @@
+diff --git a/include/color_dialog.hpp b/include/color_dialog.hpp
+index 5c7653d..895215c 100644
+--- a/include/color_dialog.hpp
++++ b/include/color_dialog.hpp
+@@ -30,6 +30,8 @@
+ 
+ class QAbstractButton;
+ 
++using namespace color_widgets;
++
+ namespace color_widgets {
+ 
+ class QCP_EXPORT ColorDialog : public QDialog
+diff --git a/include/color_list_widget.hpp b/include/color_list_widget.hpp
+index 282bea5..7d8e0c5 100644
+--- a/include/color_list_widget.hpp
++++ b/include/color_list_widget.hpp
+@@ -25,6 +25,8 @@
+ #include "abstract_widget_list.hpp"
+ #include "color_wheel.hpp"
+ 
++using namespace color_widgets;
++
+ namespace color_widgets {
+ 
+ class QCP_EXPORT ColorListWidget : public AbstractWidgetList
+diff --git a/include/color_selector.hpp b/include/color_selector.hpp
+index db817d5..48b374d 100644
+--- a/include/color_selector.hpp
++++ b/include/color_selector.hpp
+@@ -25,6 +25,8 @@
+ #include "color_preview.hpp"
+ #include "color_wheel.hpp"
+ 
++using namespace color_widgets;
++
+ namespace color_widgets {
+ 
+ /**