diff --git a/library/NekMeshUtils/CADSystem/CADSystem.h b/library/NekMeshUtils/CADSystem/CADSystem.h
index f2b2b7943fd822225229bb2e42b521f9dbec09ea..2c3557b489d5720c2a0835968787b9241dd69df3 100644
--- a/library/NekMeshUtils/CADSystem/CADSystem.h
+++ b/library/NekMeshUtils/CADSystem/CADSystem.h
@@ -201,7 +201,8 @@ public:
         return m_verts.size();
     }
 
-    Array<OneD, NekDouble> GetPeriodicTranslationVector(int first, int second);
+    NEKMESHUTILS_EXPORT Array<OneD, NekDouble> GetPeriodicTranslationVector(
+                int first, int second);
 
 protected:
     /// Name of cad file