diff --git a/src/ciderlib/twod/twodest.c b/src/ciderlib/twod/twodest.c
index 2466eea44..6294b852d 100644
--- a/src/ciderlib/twod/twodest.c
+++ b/src/ciderlib/twod/twodest.c
@@ -85,6 +85,9 @@ TWOdestroy(TWOdevice *pDevice)
       struct sTWOcontact* pFCtmp = pDevice->pFirstContact;
       while (pFCtmp) {
           struct sTWOcontact* pFCtmpnext = pFCtmp->next;
+          if (pFCtmp->pNodes) {
+              FREE(pFCtmp->pNodes);
+          }
           FREE(pFCtmp);
           pFCtmp = pFCtmpnext;
       }