diff --git a/src/ciderlib/twod/twodest.c b/src/ciderlib/twod/twodest.c
index d51297f93..147f5072b 100644
--- a/src/ciderlib/twod/twodest.c
+++ b/src/ciderlib/twod/twodest.c
@@ -66,9 +66,22 @@ TWOdestroy(TWOdevice *pDevice)
       FREE( pElem );
     }
     FREE( pDevice->elements );
+    for (int xIndex = 1; xIndex < pDevice->numXNodes; xIndex++) {
+      FREE(pDevice->elemArray[xIndex]);
+    }
     FREE( pDevice->elemArray );
   }
 
+  if (pDevice->pMaterials) {
+      TWOmaterial* pMtmp = pDevice->pMaterials;
+      while (pMtmp) {
+          TWOmaterial* pMtmpnext = pMtmp->next;
+          FREE(pMtmp);
+          pMtmp = pMtmpnext;
+      }
+  }
+
+
   /* destroy the contacts & channels */
   /* NOT IMPLEMENTED */