diff --git a/src/game/Player.cpp b/src/game/Player.cpp
index 2d3a0dd82..62af51a70 100644
--- a/src/game/Player.cpp
+++ b/src/game/Player.cpp
@@ -6026,9 +6026,12 @@ bool Player::SetOneFactionReputation(FactionEntry const* factionEntry, int32 sta
 //Calculate total reputation percent player gain with quest/creature level
 int32 Player::CalculateReputationGain(uint32 creatureOrQuestLevel, int32 rep, bool for_quest)
 {
+    // for grey creature kill received 20%, in other case 100.
+    int32 percent = (!for_quest && (creatureOrQuestLevel <= MaNGOS::XP::GetGrayLevel(getLevel()))) ? 20 : 100;
+
     int32 repMod = GetTotalAuraModifier(SPELL_AURA_MOD_REPUTATION_GAIN);
 
-    int32 percent = rep > 0 ? repMod : -repMod;
+    percent += rep > 0 ? repMod : -repMod;
 
     if(percent <=0)
         return 0;
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 17612a387..8957ac4d3 100644
--- a/src/shared/revision_nr.h
+++ b/src/shared/revision_nr.h
@@ -1,4 +1,4 @@
 #ifndef __REVISION_NR_H__
 #define __REVISION_NR_H__
- #define REVISION_NR "7513"
+ #define REVISION_NR "7514"
 #endif // __REVISION_NR_H__