diff --git a/ExternalIO/bankers-bonus-client.cpp b/ExternalIO/bankers-bonus-client.cpp
index daef496b7..df73da106 100644
--- a/ExternalIO/bankers-bonus-client.cpp
+++ b/ExternalIO/bankers-bonus-client.cpp
@@ -73,7 +73,7 @@ int main(int argc, char** argv)
     int my_client_id;
     int nparties;
     double salary_value;
-    int finish;
+    size_t finish;
     int port_base = 14000;
 
     if (argc < 5) {
diff --git a/ExternalIO/client.py b/ExternalIO/client.py
index 55c4a0406..84a392590 100644
--- a/ExternalIO/client.py
+++ b/ExternalIO/client.py
@@ -139,7 +139,7 @@ def Receive(self, socket):
         self.ptr = 0
 
     def store(self, value):
-        self.buf += struct.pack('<i', value)
+        self.buf += struct.pack('<q', value)
 
     def get_int(self, length):
         buf = self.consume(length)
diff --git a/Processor/Processor.hpp b/Processor/Processor.hpp
index 23c080ccf..d468a6302 100644
--- a/Processor/Processor.hpp
+++ b/Processor/Processor.hpp
@@ -301,8 +301,8 @@ void Processor<sint, sgf2n>::write_socket(const RegType reg_type,
             }
           else if (reg_type == INT)
             {
-              // Send vector of 32-bit clear ints
-              socket_stream.store((int&) get_Ci_ref(registers[i] + j));
+              // Send vector of 64-bit clear ints
+              socket_stream.store(get_Ci_ref(registers[i] + j));
             }
           else
             {
@@ -330,7 +330,7 @@ void Processor<sint, sgf2n>::write_socket(const RegType reg_type,
 }
 
 
-// Receive vector of 32-bit clear ints
+// Receive vector of 64-bit clear ints
 template<class sint, class sgf2n>
 void Processor<sint, sgf2n>::read_socket_ints(int client_id,
     const vector<int>& registers, int size)
@@ -344,9 +344,7 @@ void Processor<sint, sgf2n>::read_socket_ints(int client_id,
   for (int j = 0; j < size; j++)
     for (int i = 0; i < m; i++)
       {
-        int val;
-        socket_stream.get(val);
-        write_Ci(registers[i] + j, (long) val);
+        write_Ci(registers[i] + j, socket_stream.get_int(8));
       }
 }