diff --git a/src/core/CommonConfig.cpp b/src/core/CommonConfig.cpp
index a36b65536..5b8a32ab4 100644
--- a/src/core/CommonConfig.cpp
+++ b/src/core/CommonConfig.cpp
@@ -349,7 +349,7 @@ bool xmrig::CommonConfig::parseInt(int key, int arg)
         break;
 
     case DonateLevelKey: /* --donate-level */
-        if (arg >= kMinDonateLevel && arg <= 99) {
+        if (arg >= kMinimumDonateLevel && arg <= 99) {
             m_donateLevel = arg;
         }
         break;
diff --git a/src/donate.h b/src/donate.h
index bdf7a00d2..46f26b73e 100644
--- a/src/donate.h
+++ b/src/donate.h
@@ -29,9 +29,14 @@
  * Dev donation.
  *
  * 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.
+ *
+ * Example of how it works for the setting of 1%:
+ * You miner will mine into your usual pool for random time (in range from 49.5 to 148.5 minutes),
+ * then switch to the developer's pool for 1 minute, then switch again to your pool for 99 minutes
+ * and then switch agaiin to developer's pool for 1 minute, these rounds will continue until miner working.
+ *
+ * Randomised only first round, to prevent waves on the donation pool.
+ *
  * 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:
@@ -39,7 +44,7 @@
  * BTC: 1P7ujsXeX7GxQwHNnJsRMgAdNkFZmNVqJT
  */
 constexpr const int kDefaultDonateLevel = 5;
-constexpr const int kMinDonateLevel     = 1;
+constexpr const int kMinimumDonateLevel = 1;
 
 
 #endif /* __DONATE_H__ */
diff --git a/src/net/strategies/DonateStrategy.cpp b/src/net/strategies/DonateStrategy.cpp
index 6e7da0c4c..f0ec5bde7 100644
--- a/src/net/strategies/DonateStrategy.cpp
+++ b/src/net/strategies/DonateStrategy.cpp
@@ -41,8 +41,8 @@ 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);
+static inline float randomf(float min, float max) {
+    return (max - min) * ((((float) rand()) / (float) RAND_MAX)) + min;
 }
 
 
@@ -78,7 +78,7 @@ DonateStrategy::DonateStrategy(int level, const char *user, int algo, IStrategyL
     m_timer.data = this;
     uv_timer_init(uv_default_loop(), &m_timer);
 
-    idle(random(3000, 9000) * 1000 - m_donateTime);
+    idle(m_idleTime * randomf(0.5, 1.5));
 }