diff --git a/OCTREE/Makefile b/OCTREE/Makefile
index 1fc13da27705da44aa68fd1ccd560a99039c7880..5371cddadbcd1ea3d2ff7003902409bb85b4d425 100644
--- a/OCTREE/Makefile
+++ b/OCTREE/Makefile
@@ -10,6 +10,7 @@ isorti_sloan.o \
 label_sloan.o \
 number_sloan.o \
 octree_interpolate_three.o \
+octree_interpolate_five.o \
 octree_interpolate_three_derivative.o \
 profil_sloan.o \
 rootls_sloan.o