diff --git a/src/learn/multi_think.h b/src/learn/multi_think.h
index c22b7e8d..6e6c695c 100644
--- a/src/learn/multi_think.h
+++ b/src/learn/multi_think.h
@@ -17,7 +17,7 @@
 // Derive and use this class.
 struct MultiThink
 {
-	MultiThink() : prng(21120903)
+	MultiThink() : prng(std::chrono::system_clock::now().time_since_epoch().count())
 	{
 		loop_count = 0;
 	}