diff --git a/pkg/codegen/modelgenerate/ast_helpers.go b/pkg/codegen/modelgenerate/ast_helpers.go
index 9390062..4ce56f1 100644
--- a/pkg/codegen/modelgenerate/ast_helpers.go
+++ b/pkg/codegen/modelgenerate/ast_helpers.go
@@ -73,7 +73,7 @@ func FprintWithComments(w io.Writer, file *ast.File) error {
 	fset = token.NewFileSet()
 	parsed, err := parser.ParseFile(fset, "", buf.Bytes(), parser.ParseComments)
 	if err != nil {
-		return fmt.Errorf("re-parsing pretty-print: %w", err)
+		return fmt.Errorf("re-parsing pretty-print: %w\n\n%s", err, buf.String())
 	}
 
 	// Parallel walk: apply TrailingComments from the side map.