diff --git a/crates/codegen/src/class_decl.rs b/crates/codegen/src/class_decl.rs
index b53e7e9..0c205ce 100644
--- a/crates/codegen/src/class_decl.rs
+++ b/crates/codegen/src/class_decl.rs
@@ -352,8 +352,9 @@ impl ClassProcessedData {
         for field in &self.fields {
             if let Some(init) = &field.item.init {
                 field.gen_span(cg);
-                cg.add_indentedln(&format!("this.{} = ", field.item.decl.name.get_rust()));
+                cg.add_indented(&format!("this.{} = ", field.item.decl.name.get_rust()));
                 init.gen_rust(ctx, cg);
+                cg.addln(";");
             }
         }
 
diff --git a/crates/parser/src/semantics.rs b/crates/parser/src/semantics.rs
index a7d557d..5a21f9b 100644
--- a/crates/parser/src/semantics.rs
+++ b/crates/parser/src/semantics.rs
@@ -46,10 +46,13 @@ pub fn check_class_semantics<'a>(top_level: &TopLevel) -> Result<(), Vec<Semanti
         if let Some(constructor) = constructor {
             let mut fields = fields
                 .iter()
-                .map(|field| Spanned {
-                    item: field.item.decl.name.clone(),
-                    line: field.line,
-                    column: field.column,
+                .filter_map(|field| match field.item.init {
+                    Some(_) => None,
+                    None => Some(Spanned {
+                        item: field.item.decl.name.clone(),
+                        line: field.line,
+                        column: field.column,
+                    }),
                 })
                 .collect::<Vec<_>>();