diff --git a/source/turtle/io.cpp b/source/turtle/io.cpp
index e7cd7d8..bbf64df 100644
--- a/source/turtle/io.cpp
+++ b/source/turtle/io.cpp
@@ -17,7 +17,7 @@ export namespace turtle {
 			return false;
 		}
 
-		static int run(coral::slice<char const> const & title, coral::closure<int(event_loop &)> execute) {
+		static void run(coral::slice<char const> const & title, coral::closure<void(event_loop &)> execute) {
 			event_loop loop{title};
 
 			return execute(loop);