diff --git a/CMakeLists.txt b/CMakeLists.txt
index 722935aa2de4c7553f4f15826432be9c96d483ed..00ce82ff91407e97751b5394a146aca67cd95e59 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -119,7 +119,7 @@ set(GMSH_API
     Geo/MVertexBoundaryLayerData.h Geo/MEdge.h
     Geo/MFace.h Geo/MElement.h Geo/MElementOctree.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/MElementOctree.h
+    Geo/MPrism.h Geo/MPyramid.h Geo/MTrihedron.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