diff --git a/src/rstd/collections/stack.rs b/src/rstd/collections/stack.rs
index 3d8cca5..da8cc5c 100644
--- a/src/rstd/collections/stack.rs
+++ b/src/rstd/collections/stack.rs
@@ -75,18 +75,13 @@ impl<'a, Ctx: Context<'a>, F: Factory<'a, Ctx>> Factory<'a, Ctx> for StackNodeFa
     type ParseError = StackParseError<ParseError<'a, Ctx, F>>;
 
     fn deserialize(&self, dectx: &mut dyn DeCtx<'a, Ctx>) -> ParseResult<'a, Ctx, Self> {
-        let rest = match NullableFactory::new(self.clone()).deserialize(dectx) {
-            Ok(rest) => rest,
-            Err(ppe) => {
-                return Err(StackParseError::Point(ppe));
-            }
-        };
-        let element = match self.element_factory.deserialize(dectx) {
-            Ok(element) => element,
-            Err(epe) => {
-                return Err(StackParseError::Element(epe));
-            }
-        };
+        let rest = NullableFactory::new(self.clone())
+            .deserialize(dectx)
+            .map_err(StackParseError::Point)?;
+        let element = self
+            .element_factory
+            .deserialize(dectx)
+            .map_err(StackParseError::Element)?;
         Ok(StackNode { rest, element })
     }