diff --git a/impl/src/prop.rs b/impl/src/prop.rs
index 56b6108..a024833 100644
--- a/impl/src/prop.rs
+++ b/impl/src/prop.rs
@@ -45,7 +45,7 @@ impl Variant<'_> {
 
 fn source_field<'a, 'b>(fields: &'a [Field<'b>]) -> Option<&'a Field<'b>> {
     for field in fields {
-        if field.attrs.source.is_some() {
+        if field.attrs.from.is_some() || field.attrs.source.is_some() {
             return Some(&field);
         }
     }