diff --git a/src/rstd/collections/stack.rs b/src/rstd/collections/stack.rs
index 6138a2d..2b17b41 100644
--- a/src/rstd/collections/stack.rs
+++ b/src/rstd/collections/stack.rs
@@ -116,7 +116,7 @@ where
         let (rest, inctx) = self.parse_point(inctx)?;
         let element = self
             .element_factory
-            .deserialize(inctx)
+            .rdeserialize(inctx)
             .map_err(StackParseError::Element)?;
         Ok(StackNode { rest, element })
     }
@@ -124,7 +124,7 @@ where
     fn crextend(&self, mut mentionable: Self::Mtbl, tail: &[u8]) -> ParseResult<'a, Ctx, Self> {
         mentionable.element = self
             .element_factory
-            .extend(mentionable.element, tail)
+            .rextend(mentionable.element, tail)
             .map_err(StackParseError::Element)?;
         Ok(mentionable)
     }