OER encoding of pure NULLs verified
diff --git a/skeletons/constr_CHOICE.c b/skeletons/constr_CHOICE.c
index 1e8f8ee..49c389d 100644
--- a/skeletons/constr_CHOICE.c
+++ b/skeletons/constr_CHOICE.c
@@ -1176,7 +1176,7 @@
     unsigned apresent = 0;
     unsigned bpresent = 0;
     const void *amember = _get_member_ptr(td, aptr, &aelm, &apresent);
-    const void *bmember = _get_member_ptr(td, bptr, &belm, &apresent);
+    const void *bmember = _get_member_ptr(td, bptr, &belm, &bpresent);
 
     if(amember && bmember) {
         if(apresent == bpresent) {