diff --git a/src/mem/ruby/network/simple/SimpleNetwork.cc b/src/mem/ruby/network/simple/SimpleNetwork.cc
index 41f587d47..a3848a8e3 100644
--- a/src/mem/ruby/network/simple/SimpleNetwork.cc
+++ b/src/mem/ruby/network/simple/SimpleNetwork.cc
@@ -208,9 +208,6 @@ SimpleNetwork::getThrottles(NodeID id) const
 void
 SimpleNetwork::regStats()
 {
-    m_msg_counts.resize(MessageSizeType_NUM);
-    m_msg_bytes.resize(MessageSizeType_NUM);
-
     for (MessageSizeType type = MessageSizeType_FIRST;
          type < MessageSizeType_NUM; ++type) {
         m_msg_counts[(unsigned int) type]
diff --git a/src/mem/ruby/network/simple/SimpleNetwork.hh b/src/mem/ruby/network/simple/SimpleNetwork.hh
index 06db20c0b..69aeeffb7 100644
--- a/src/mem/ruby/network/simple/SimpleNetwork.hh
+++ b/src/mem/ruby/network/simple/SimpleNetwork.hh
@@ -111,8 +111,8 @@ class SimpleNetwork : public Network
     bool m_adaptive_routing;    
 
     //Statistical variables
-    std::vector<Stats::Formula> m_msg_counts;
-    std::vector<Stats::Formula> m_msg_bytes;
+    Stats::Formula m_msg_counts[MessageSizeType_NUM];
+    Stats::Formula m_msg_bytes[MessageSizeType_NUM];
 };
 
 inline std::ostream&
diff --git a/src/mem/ruby/network/simple/Switch.cc b/src/mem/ruby/network/simple/Switch.cc
index c28bbdd86..d5c32016e 100644
--- a/src/mem/ruby/network/simple/Switch.cc
+++ b/src/mem/ruby/network/simple/Switch.cc
@@ -30,7 +30,6 @@
 
 #include "base/cast.hh"
 #include "base/stl_helpers.hh"
-#include "mem/protocol/MessageSizeType.hh"
 #include "mem/ruby/buffers/MessageBuffer.hh"
 #include "mem/ruby/network/simple/PerfectSwitch.hh"
 #include "mem/ruby/network/simple/SimpleNetwork.hh"
@@ -44,8 +43,6 @@ using m5::stl_helpers::operator<<;
 Switch::Switch(const Params *p) : BasicRouter(p)
 {
     m_perfect_switch = new PerfectSwitch(m_id, this, p->virt_nets);
-    m_msg_counts.resize(MessageSizeType_NUM);
-    m_msg_bytes.resize(MessageSizeType_NUM);
 }
 
 Switch::~Switch()
diff --git a/src/mem/ruby/network/simple/Switch.hh b/src/mem/ruby/network/simple/Switch.hh
index 47f4c0858..85f1b6d6f 100644
--- a/src/mem/ruby/network/simple/Switch.hh
+++ b/src/mem/ruby/network/simple/Switch.hh
@@ -43,6 +43,7 @@
 #include <vector>
 
 #include "mem/packet.hh"
+#include "mem/protocol/MessageSizeType.hh"
 #include "mem/ruby/common/TypeDefines.hh"
 #include "mem/ruby/network/BasicRouter.hh"
 #include "params/Switch.hh"
@@ -92,8 +93,8 @@ class Switch : public BasicRouter
 
     // Statistical variables
     Stats::Formula m_avg_utilization;
-    std::vector<Stats::Formula> m_msg_counts;
-    std::vector<Stats::Formula> m_msg_bytes;
+    Stats::Formula m_msg_counts[MessageSizeType_NUM];
+    Stats::Formula m_msg_bytes[MessageSizeType_NUM];
 };
 
 inline std::ostream&
diff --git a/src/mem/ruby/network/simple/Throttle.cc b/src/mem/ruby/network/simple/Throttle.cc
index 4a5616153..88b46e252 100644
--- a/src/mem/ruby/network/simple/Throttle.cc
+++ b/src/mem/ruby/network/simple/Throttle.cc
@@ -80,9 +80,6 @@ Throttle::init(NodeID node, Cycles link_latency,
 
     m_wakeups_wo_switch = 0;
 
-    m_msg_counts.resize(MessageSizeType_NUM);
-    m_msg_bytes.resize(MessageSizeType_NUM);
-
     m_link_utilization_proxy = 0;
 }
 
diff --git a/src/mem/ruby/network/simple/Throttle.hh b/src/mem/ruby/network/simple/Throttle.hh
index b21af4d64..cdc627bb7 100644
--- a/src/mem/ruby/network/simple/Throttle.hh
+++ b/src/mem/ruby/network/simple/Throttle.hh
@@ -104,8 +104,8 @@ class Throttle : public Consumer
 
     // Statistical variables
     Stats::Scalar m_link_utilization;
-    std::vector<Stats::Vector> m_msg_counts;
-    std::vector<Stats::Formula> m_msg_bytes;
+    Stats::Vector m_msg_counts[MessageSizeType_NUM];
+    Stats::Formula m_msg_bytes[MessageSizeType_NUM];
 
     double m_link_utilization_proxy;
 };