diff --git a/CMakeLists.txt b/CMakeLists.txt
index db73a5004e09980b80d2382db57efd10c32fb86d..ccf539cfda08899295dc21ef1c4417f676d17585 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -91,7 +91,7 @@ set(GMSH_API
     Geo/MVertexBoundaryLayerData.h Geo/MEdge.h 
     Geo/MFace.h Geo/MElement.h Geo/MPoint.h Geo/MLine.h Geo/MTriangle.h 
     Geo/MQuadrangle.h Geo/MTetrahedron.h Geo/MHexahedron.h Geo/MPrism.h 
-    Geo/MPyramid.h Geo/MElementCut.h Geo/discreteVertex.h Geo/discreteEdge.h
+    Geo/MPyramid.h Geo/MElementCut.h Geo/MElementOctree.h Geo/discreteVertex.h Geo/discreteEdge.h
     Geo/discreteFace.h Geo/discreteRegion.h Geo/SPoint2.h Geo/SPoint3.h
     Geo/SVector3.h Geo/STensor3.h Geo/SBoundingBox3d.h Geo/Pair.h Geo/Range.h 
     Geo/SOrientedBoundingBox.h Geo/CellComplex.h Geo/ChainComplex.h Geo/Cell.h