diff --git a/vlib/coroutines/coroutines.c.v b/vlib/coroutines/coroutines.c.v
index 0c3435c445..8ad961ff4a 100644
--- a/vlib/coroutines/coroutines.c.v
+++ b/vlib/coroutines/coroutines.c.v
@@ -30,7 +30,7 @@ fn C.photon_set_log_output_stderr()
 fn C.photon_set_log_output_null()
 fn C.photon_join_current_thread_into_workpool() int
 fn C.photon_thread_create_and_migrate_to_work_pool(f voidptr, arg voidptr)
-fn C.photon_thread_create(f voidptr, arg voidptr)
+fn C.photon_thread_create(f voidptr, arg voidptr, stack_size u64)
 fn C.photon_thread_migrate()
 
 // fn C.photon_thread_migrate(work_pool voidptr)
diff --git a/vlib/v/gen/c/spawn_and_go.v b/vlib/v/gen/c/spawn_and_go.v
index fe302e6cdb..fdf154171a 100644
--- a/vlib/v/gen/c/spawn_and_go.v
+++ b/vlib/v/gen/c/spawn_and_go.v
@@ -164,7 +164,7 @@ fn (mut g Gen) spawn_and_go_expr(node ast.SpawnExpr, mode SpawnGoMode) {
 		if util.nr_jobs > 1 {
 			g.writeln('photon_thread_create_and_migrate_to_work_pool((void*)${wrapper_fn_name}, &${arg_tmp_var});')
 		} else {
-			g.writeln('photon_thread_create((void*)${wrapper_fn_name}, &${arg_tmp_var});')
+			g.writeln('photon_thread_create((void*)${wrapper_fn_name}, &${arg_tmp_var}, 8 * 1024);')
 		}
 	}
 	g.writeln('// end go')