diff --git a/src/generator.h b/src/generator.h
index a42b6bf..d211a02 100644
--- a/src/generator.h
+++ b/src/generator.h
@@ -35,7 +35,7 @@ public:
 		r.clear();
 	}
 
-	void seed (uint bits, bool quick);
+	void seed (uint bits, bool quick = true);
 
 	uint random (uint n) {
 		//rand_max is 2^32.