diff --git a/gir.js b/gir.js
index a273922..5ba67e5 100644
--- a/gir.js
+++ b/gir.js
@@ -217,9 +217,9 @@ function prettifyIR(parsed) {
 			}
 		}
 
-		return lines.join('\n');
+		return lines
 	}
-	return worker(parsed);
+	return worker(parsed).join('\n');
 }
 
 // ------------------------------------------------------------------