diff --git a/src/Mod/Fem/Gui/TaskPostBoxes.cpp b/src/Mod/Fem/Gui/TaskPostBoxes.cpp
index 9be801af38..391e88b9b1 100644
--- a/src/Mod/Fem/Gui/TaskPostBoxes.cpp
+++ b/src/Mod/Fem/Gui/TaskPostBoxes.cpp
@@ -56,6 +56,7 @@
 #include "ui_TaskPostWarpVector.h"
 
 #include "TaskPostBoxes.h"
+#include "ViewProviderFemPostFilter.h"
 #include "ViewProviderFemPostFunction.h"
 #include "ViewProviderFemPostObject.h"