diff --git a/main.c b/main.c
index da83640..35cee0b 100644
--- a/main.c
+++ b/main.c
@@ -71,8 +71,10 @@ static size_t threads_parallel(LVM *lvm, void *ud, size_t argn, set_LValueU *hea
 	lvm_reset_regs(&set);
 	lvm_call(lvm, func, 0, heap, &set);
 	
+	// This thread must still respond to the GC
 	while(atomic_load(&ctx.finished) != no - 1) {
 		lvm->safepoint_func(lvm, heap, regset);
+		thrd_yield();
 	}
 	
 	return 0;