diff --git a/src/Mod/Assembly/Gui/TaskAssemblyConstraints.h b/src/Mod/Assembly/Gui/TaskAssemblyConstraints.h
index a745ce53f..06d3d9bba 100644
--- a/src/Mod/Assembly/Gui/TaskAssemblyConstraints.h
+++ b/src/Mod/Assembly/Gui/TaskAssemblyConstraints.h
@@ -27,7 +27,7 @@
 #include <Gui/TaskView/TaskView.h>
 #include <Gui/Selection.h>
 #include "ViewProviderConstraint.h"
-#include <opendcm/core/equations.hpp>
+#include <opendcm/core.hpp>
 #include <Solver.h>
 #include <boost/signals.hpp>
 #include "ui_TaskAssemblyConstraints.h"