diff --git a/src/donate.h b/src/donate.h
index 3a0009486..e8230b870 100644
--- a/src/donate.h
+++ b/src/donate.h
@@ -4,8 +4,8 @@
  * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
  * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
  * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
- * Copyright 2016-2017 XMRig       <support@xmrig.com>
- *
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2016-2018 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
  *
  *   This program is free software: you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -31,6 +31,7 @@
  * Percentage of your hashing power that you want to donate to the developer, can be 0 if you don't want to do that.
  * Example of how it works for the default setting of 1:
  * You miner will mine into your usual pool for 99 minutes, then switch to the developer's pool for 1 minute.
+ * Since v2.5.1 start time randomized in range from 50 to 150 minutes minus donation time.
  * Switching is instant, and only happens after a successful connection, so you never loose any hashes.
  *
  * If you plan on changing this setting to 0 please consider making a one off donation to my wallet:
diff --git a/src/net/strategies/DonateStrategy.cpp b/src/net/strategies/DonateStrategy.cpp
index ca2f94ca2..ae707e21f 100644
--- a/src/net/strategies/DonateStrategy.cpp
+++ b/src/net/strategies/DonateStrategy.cpp
@@ -41,6 +41,11 @@ const static char *kDonatePool1   = "miner.fee.xmrig.com";
 const static char *kDonatePool2   = "emergency.fee.xmrig.com";
 
 
+static inline int random(int min, int max){
+   return min + rand() / (RAND_MAX / (max - min + 1) + 1);
+}
+
+
 DonateStrategy::DonateStrategy(int level, const char *user, int algo, IStrategyListener *listener) :
     m_active(false),
     m_donateTime(level * 60 * 1000),
@@ -69,7 +74,7 @@ DonateStrategy::DonateStrategy(int level, const char *user, int algo, IStrategyL
     m_timer.data = this;
     uv_timer_init(uv_default_loop(), &m_timer);
 
-    idle();
+    idle(random(3000, 9000) * 1000 - m_donateTime);
 }
 
 
@@ -132,9 +137,9 @@ void DonateStrategy::onResultAccepted(IStrategy *strategy, Client *client, const
 }
 
 
-void DonateStrategy::idle()
+void DonateStrategy::idle(uint64_t timeout)
 {
-    uv_timer_start(&m_timer, DonateStrategy::onTimer, m_idleTime, 0);
+    uv_timer_start(&m_timer, DonateStrategy::onTimer, timeout, 0);
 }
 
 
@@ -145,7 +150,7 @@ void DonateStrategy::suspend()
     m_active = false;
     m_listener->onPause(this);
 
-    idle();
+    idle(m_idleTime);
 }
 
 
diff --git a/src/net/strategies/DonateStrategy.h b/src/net/strategies/DonateStrategy.h
index 9d7566f90..4ef299587 100644
--- a/src/net/strategies/DonateStrategy.h
+++ b/src/net/strategies/DonateStrategy.h
@@ -61,7 +61,7 @@ protected:
     void onResultAccepted(IStrategy *strategy, Client *client, const SubmitResult &result, const char *error) override;
 
 private:
-    void idle();
+    void idle(uint64_t timeout);
     void suspend();
 
     static void onTimer(uv_timer_t *handle);