diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index 371f836a36..a5861ab885 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -305,6 +305,8 @@ pkg_depends(LATBOLTZ MPI)
 pkg_depends(PHONON KSPACE)
 pkg_depends(SCAFACOS MPI)
 pkg_depends(DIELECTRIC KSPACE)
+pkg_depends(CG-DNA MOLECULE)
+pkg_depends(CG-DNA ASPHERE)
 
 # detect if we may enable OpenMP support by default
 set(BUILD_OMP_DEFAULT OFF)
diff --git a/doc/src/Packages_details.rst b/doc/src/Packages_details.rst
index cf70be0d4b..5a4327dad6 100644
--- a/doc/src/Packages_details.rst
+++ b/doc/src/Packages_details.rst
@@ -311,6 +311,11 @@ rigid-body integrators with improved stability.
 
 **Author:** Oliver Henrich (University of Strathclyde, Glasgow).
 
+**Install:**
+
+The CG-DNA package requires that also the `MOLECULE <PKG-MOLECULE>`_ and
+`ASPHERE <PKG-ASPHERE>`_ packages are installed.
+
 **Supporting info:**
 
 * src/CG-DNA: filenames -> commands
diff --git a/src/CG-DNA/Install.sh b/src/CG-DNA/Install.sh
index bf74a85aef..3c65fac787 100755
--- a/src/CG-DNA/Install.sh
+++ b/src/CG-DNA/Install.sh
@@ -26,10 +26,25 @@ action () {
   fi
 }
 
+# the CG-DNA package cannot be used without
+# the MOLECULE and ASPHERE packages installed.
+
+if (test $1 = 1) then
+  if (test ! -e ../bond_harmonic.cpp) then
+    echo "Must install MOLECULE package with CG-DNA"
+    exit 1
+  fi
+  if (test ! -e ../fix_nve_asphere.cpp) then
+    echo "Must install ASPHERE package with CG-DNA"
+    exit 1
+  fi
+fi
+
+
 # list of files with dependcies
 
-action  atom_vec_oxdna.cpp atom_vec.h
-action  atom_vec_oxdna.h atom_vec.h
+action  atom_vec_oxdna.cpp
+action  atom_vec_oxdna.h
 action  bond_oxdna_fene.cpp bond_fene.h
 action  bond_oxdna2_fene.cpp bond_fene.h
 action  bond_oxrna2_fene.cpp bond_fene.h