diff --git a/src/game/ArenaTeam.cpp b/src/game/ArenaTeam.cpp
index 4fe4fcb2c..df1fc7d9f 100644
--- a/src/game/ArenaTeam.cpp
+++ b/src/game/ArenaTeam.cpp
@@ -561,7 +561,7 @@ int32 ArenaTeam::LostAgainst(uint32 againstRating)
     float chance = GetChanceAgainst(m_stats.rating, againstRating);
     float K = (m_stats.rating < 1000) ? 48.0f : 32.0f;
     // calculate the rating modification (ELO system with k=32 or k=48 if rating<1000)
-    int32 mod = (int32)floor(K* (1.0f - chance));
+    int32 mod = (int32)ceil(K * (0.0f - chance));
     // modify the team stats accordingly
     FinishGame(mod);
 
@@ -578,9 +578,9 @@ void ArenaTeam::MemberLost(Player * plr, uint32 againstRating)
         {
             // update personal rating
             float chance = GetChanceAgainst(itr->personal_rating, againstRating);
-            float K = (m_stats.rating < 1000) ? 48.0f : 32.0f;
+            float K = (itr->personal_rating < 1000) ? 48.0f : 32.0f;
             // calculate the rating modification (ELO system with k=32 or k=48 if rating<1000)
-            int32 mod = (int32)floor(K* (1.0f - chance));
+            int32 mod = (int32)ceil(K * (0.0f - chance));
             itr->ModifyPersonalRating(plr, mod, GetSlot());
             // update personal played stats
             itr->games_week += 1;
@@ -602,9 +602,9 @@ void ArenaTeam::OfflineMemberLost(uint64 guid, uint32 againstRating)
         {
             // update personal rating
             float chance = GetChanceAgainst(itr->personal_rating, againstRating);
-            float K = (m_stats.rating < 1000) ? 48.0f : 32.0f;
+            float K = (itr->personal_rating < 1000) ? 48.0f : 32.0f;
             // calculate the rating modification (ELO system with k=32 or k=48 if rating<1000)
-            int32 mod = (int32)floor(K* (1.0f - chance));
+            int32 mod = (int32)ceil(K * (0.0f - chance));
             if (int32(itr->personal_rating) + mod < 0)
                 itr->personal_rating = 0;
             else
@@ -626,7 +626,7 @@ void ArenaTeam::MemberWon(Player * plr, uint32 againstRating)
         {
             // update personal rating
             float chance = GetChanceAgainst(itr->personal_rating, againstRating);
-            float K = (m_stats.rating < 1000) ? 48.0f : 32.0f;
+            float K = (itr->personal_rating < 1000) ? 48.0f : 32.0f;
             // calculate the rating modification (ELO system with k=32 or k=48 if rating<1000)
             int32 mod = (int32)floor(K* (1.0f - chance));
             itr->ModifyPersonalRating(plr, mod, GetSlot());
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index da5c412c2..e054693fc 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 "8779"
+ #define REVISION_NR "8780"
 #endif // __REVISION_NR_H__