diff --git a/src/engine/client/client.cpp b/src/engine/client/client.cpp
index d6010b839..b2c6507f1 100644
--- a/src/engine/client/client.cpp
+++ b/src/engine/client/client.cpp
@@ -2087,7 +2087,7 @@ void CClient::ProcessServerPacketDummy(CNetChunk *pPacket)
 
 			pData = (const char *)Unpacker.GetRaw(PartSize);
 
-			if(Unpacker.Error() || NumParts < 1 || Part < 0 || PartSize < 0)
+			if(Unpacker.Error() || NumParts < 1 || NumParts > CSnapshot::MAX_PARTS || Part < 0 || Part >= NumParts || PartSize < 0 || PartSize > MAX_SNAPSHOT_PACKSIZE)
 				return;
 
 			if(GameTick >= m_CurrentRecvTick[!g_Config.m_ClDummy])