diff --git a/src/net.cpp b/src/net.cpp
index df88b12c7..5a5d94cd1 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -754,7 +754,7 @@ const uint256& CNetMessage::GetMessageHash() const
 
 
 // requires LOCK(cs_vSend)
-size_t CConnman::SocketSendData(CNode *pnode)
+size_t CConnman::SocketSendData(CNode *pnode) const
 {
     auto it = pnode->vSendMsg.begin();
     size_t nSentSize = 0;
@@ -2687,12 +2687,12 @@ int64_t PoissonNextSend(int64_t nNow, int average_interval_seconds) {
     return nNow + (int64_t)(log1p(GetRand(1ULL << 48) * -0.0000000000000035527136788 /* -1/2^48 */) * average_interval_seconds * -1000000.0 + 0.5);
 }
 
-CSipHasher CConnman::GetDeterministicRandomizer(uint64_t id)
+CSipHasher CConnman::GetDeterministicRandomizer(uint64_t id) const
 {
     return CSipHasher(nSeed0, nSeed1).Write(id);
 }
 
-uint64_t CConnman::CalculateKeyedNetGroup(const CAddress& ad)
+uint64_t CConnman::CalculateKeyedNetGroup(const CAddress& ad) const
 {
     std::vector<unsigned char> vchNetGroup(ad.GetGroup());
 
diff --git a/src/net.h b/src/net.h
index 0b8efcc88..6228f7b50 100644
--- a/src/net.h
+++ b/src/net.h
@@ -321,7 +321,7 @@ public:
     int GetBestHeight() const;
 
     /** Get a unique deterministic randomizer. */
-    CSipHasher GetDeterministicRandomizer(uint64_t id);
+    CSipHasher GetDeterministicRandomizer(uint64_t id) const;
 
     unsigned int GetReceiveFloodSize() const;
 
@@ -342,7 +342,7 @@ private:
     void ThreadSocketHandler();
     void ThreadDNSAddressSeed();
 
-    uint64_t CalculateKeyedNetGroup(const CAddress& ad);
+    uint64_t CalculateKeyedNetGroup(const CAddress& ad) const;
 
     CNode* FindNode(const CNetAddr& ip);
     CNode* FindNode(const CSubNet& subNet);
@@ -357,7 +357,7 @@ private:
 
     NodeId GetNewNodeId();
 
-    size_t SocketSendData(CNode *pnode);
+    size_t SocketSendData(CNode *pnode) const;
     //!check is the banlist has unwritten changes
     bool BannedSetIsDirty();
     //!set the "dirty" flag for the banlist