diff --git a/applications/utilities/mesh/generation/cvMesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshCalcDualMesh.C b/applications/utilities/mesh/generation/cvMesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshCalcDualMesh.C
index 92ee53c1f2..d2aa6a8027 100644
--- a/applications/utilities/mesh/generation/cvMesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshCalcDualMesh.C
+++ b/applications/utilities/mesh/generation/cvMesh/conformalVoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshCalcDualMesh.C
@@ -30,6 +30,7 @@ License
 #include "indexedCellChecks.H"
 
 #include "CGAL/Exact_predicates_exact_constructions_kernel.h"
+#include "CGAL/Gmpq.h"
 
 // * * * * * * * * * * * * Private Member Functions  * * * * * * * * * * * * //