diff --git a/src/Makefile b/src/Makefile
index 7d31c81c75d79d644f45d70365658cf1be8a2b4d..b6aa5e0d9205b59a998982167a835f6a30e70704 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -63,7 +63,7 @@ PACKUSER = user-atc user-awpmd user-bocs user-cgdna user-cgsdk user-colvars \
 	   user-mgpt user-misc user-mofff user-molfile \
 	   user-netcdf user-omp user-phonon user-ptm user-qmmm user-qtb \
 	   user-quip user-reaxc user-scafacos user-smd user-smtbq \
-	   user-sph user-tally user-uef user-vtk
+	   user-sdpd user-sph user-tally user-uef user-vtk
 
 PACKLIB = compress gpu kim kokkos latte meam message mpiio mscg poems \
 	  python reax voronoi \