diff --git a/src/game/MiscHandler.cpp b/src/game/MiscHandler.cpp
index b0fc08da2..d6c5e1805 100644
--- a/src/game/MiscHandler.cpp
+++ b/src/game/MiscHandler.cpp
@@ -962,10 +962,11 @@ void WorldSession::HandleRequestAccountData(WorldPacket& recv_data)
 
     uint32 size = adata->Data.size();
 
-    ByteBuffer dest;
-    dest.resize(size);
+    uLongf destSize = compressBound(size);
+
+    ByteBuffer dest;
+    dest.resize(destSize);
 
-    uLongf destSize = size;
     if(size && compress(const_cast<uint8*>(dest.contents()), &destSize, (uint8*)adata->Data.c_str(), size) != Z_OK)
     {
         sLog.outDebug("RAD: Failed to compress account data");
diff --git a/src/game/UpdateData.cpp b/src/game/UpdateData.cpp
index c7b7e78fa..e63de736f 100644
--- a/src/game/UpdateData.cpp
+++ b/src/game/UpdateData.cpp
@@ -126,7 +126,7 @@ bool UpdateData::BuildPacket(WorldPacket *packet)
 
     if (pSize > 100 )                                       // compress large packets
     {
-        uint32 destsize = pSize;
+        uint32 destsize = compressBound(pSize);
         packet->resize( destsize + sizeof(uint32) );
 
         packet->put<uint32>(0, pSize);
diff --git a/src/shared/revision_nr.h b/src/shared/revision_nr.h
index 54f5242e8..91f21fa22 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 "8230"
+ #define REVISION_NR "8231"
 #endif // __REVISION_NR_H__