diff --git a/sot-tools-v3/Makefile b/sot-tools-v3/Makefile
index 19f6f772e3261c173a57b88dede13cc0e6f40736..ab5c2c3a596b92f45a8bf6ca9b302b6e6cf0825e 100644
--- a/sot-tools-v3/Makefile
+++ b/sot-tools-v3/Makefile
@@ -28,6 +28,7 @@ DYNAMIC_PLIST_DIRS+=	share/doc/${NAME}
 
 include ../../wip/sot-core-v3/depend.mk
 include ../../pkgtools/pkg-config/depend.mk
+include ../../math/eigen3/depend.mk
 include ../../mk/sysdep/cmake.mk
 include ../../mk/sysdep/doxygen.mk
 include ../../mk/sysdep/graphviz.mk