diff --git a/DCCEXParser.cpp b/DCCEXParser.cpp
index a35803e..56f17a2 100644
--- a/DCCEXParser.cpp
+++ b/DCCEXParser.cpp
@@ -52,7 +52,7 @@ const int HASH_KEYWORD_ETHERNET = -30767;
 const int HASH_KEYWORD_MAX = 16244;
 const int HASH_KEYWORD_MIN = 15978;
 
-int DCCEXParser::stashP[MAX_PARAMS];
+int DCCEXParser::stashP[MAX_COMMAND_PARAMS];
 bool DCCEXParser::stashBusy;
 
 Print *DCCEXParser::stashStream = NULL;
@@ -102,7 +102,7 @@ void DCCEXParser::loop(Stream &stream)
     Sensor::checkAll(&stream); // Update and print changes
 }
 
-int DCCEXParser::splitValues(int result[MAX_PARAMS], const byte *cmd)
+int DCCEXParser::splitValues(int result[MAX_COMMAND_PARAMS], const byte *cmd)
 {
     byte state = 1;
     byte parameterCount = 0;
@@ -111,10 +111,10 @@ int DCCEXParser::splitValues(int result[MAX_PARAMS], const byte *cmd)
     bool signNegative = false;
 
     // clear all parameters in case not enough found
-    for (int i = 0; i < MAX_PARAMS; i++)
+    for (int i = 0; i < MAX_COMMAND_PARAMS; i++)
         result[i] = 0;
 
-    while (parameterCount < MAX_PARAMS)
+    while (parameterCount < MAX_COMMAND_PARAMS)
     {
         byte hot = *remainingCmd;
 
@@ -161,7 +161,7 @@ int DCCEXParser::splitValues(int result[MAX_PARAMS], const byte *cmd)
     return parameterCount;
 }
 
-int DCCEXParser::splitHexValues(int result[MAX_PARAMS], const byte *cmd)
+int DCCEXParser::splitHexValues(int result[MAX_COMMAND_PARAMS], const byte *cmd)
 {
     byte state = 1;
     byte parameterCount = 0;
@@ -169,10 +169,10 @@ int DCCEXParser::splitHexValues(int result[MAX_PARAMS], const byte *cmd)
     const byte *remainingCmd = cmd + 1; // skips the opcode
     
     // clear all parameters in case not enough found
-    for (int i = 0; i < MAX_PARAMS; i++)
+    for (int i = 0; i < MAX_COMMAND_PARAMS; i++)
         result[i] = 0;
 
-    while (parameterCount < MAX_PARAMS)
+    while (parameterCount < MAX_COMMAND_PARAMS)
     {
         byte hot = *remainingCmd;
 
@@ -251,7 +251,7 @@ void DCCEXParser::parse(Print *stream, byte *com, bool blocking)
     (void)EEPROM; // tell compiler not to warn this is unused
     if (Diag::CMD)
         DIAG(F("\nPARSING:%s\n"), com);
-    int p[MAX_PARAMS];
+    int p[MAX_COMMAND_PARAMS];
     while (com[0] == '<' || com[0] == ' ')
         com++; // strip off any number of < or spaces
     byte params = splitValues(p, com);
@@ -770,13 +770,13 @@ bool DCCEXParser::parseD(Print *stream, int params, int p[])
 }
 
 // CALLBACKS must be static
-bool DCCEXParser::stashCallback(Print *stream, int p[MAX_PARAMS])
+bool DCCEXParser::stashCallback(Print *stream, int p[MAX_COMMAND_PARAMS])
 {
     if (stashBusy )
         return false;
     stashBusy = true;
     stashStream = stream;
-    memcpy(stashP, p, MAX_PARAMS * sizeof(p[0]));
+    memcpy(stashP, p, MAX_COMMAND_PARAMS * sizeof(p[0]));
     return true;
 }
 void DCCEXParser::callback_W(int result)
diff --git a/DCCEXParser.h b/DCCEXParser.h
index f0546b2..c1dfd13 100644
--- a/DCCEXParser.h
+++ b/DCCEXParser.h
@@ -34,7 +34,7 @@ struct DCCEXParser
    static void setFilter(FILTER_CALLBACK filter);
    static void setRMFTFilter(FILTER_CALLBACK filter);
    static void setAtCommandCallback(AT_COMMAND_CALLBACK filter);
-   static const int MAX_PARAMS=10;  // Must not exceed this
+   static const int MAX_COMMAND_PARAMS=10;  // Must not exceed this
  
    private:
   
@@ -42,8 +42,8 @@ struct DCCEXParser
      byte  bufferLength=0;
      bool  inCommandPayload=false;
      byte  buffer[MAX_BUFFER+2]; 
-    int splitValues( int result[MAX_PARAMS], const byte * command);
-    int splitHexValues( int result[MAX_PARAMS], const byte * command);
+    int splitValues( int result[MAX_COMMAND_PARAMS], const byte * command);
+    int splitHexValues( int result[MAX_COMMAND_PARAMS], const byte * command);
      
      bool parseT(Print * stream, int params, int p[]);
      bool parseZ(Print * stream, int params, int p[]);
@@ -55,8 +55,8 @@ struct DCCEXParser
     static bool stashBusy;
    
     static Print * stashStream;
-    static int stashP[MAX_PARAMS];
-    bool stashCallback(Print * stream, int p[MAX_PARAMS]);
+    static int stashP[MAX_COMMAND_PARAMS];
+    bool stashCallback(Print * stream, int p[MAX_COMMAND_PARAMS]);
     static void callback_W(int result);
     static void callback_B(int result);        
     static void callback_R(int result);
diff --git a/WifiInboundHandler.cpp b/WifiInboundHandler.cpp
index 67f68e3..02d3e0a 100644
--- a/WifiInboundHandler.cpp
+++ b/WifiInboundHandler.cpp
@@ -17,6 +17,7 @@
  *  You should have received a copy of the GNU General Public License
  *  along with CommandStation.  If not, see <https://www.gnu.org/licenses/>.
  */
+#ifndef ARDUINO_AVR_UNO_WIFI_REV2
 #include <Arduino.h>
 #include "WifiInboundHandler.h"
 #include "RingStream.h"
@@ -247,3 +248,5 @@ void WifiInboundHandler::purgeCurrentCIPSEND() {
          pendingCipsend=false;  
          clientPendingCIPSEND=-1;
 }
+
+#endif
diff --git a/WifiInterface.cpp b/WifiInterface.cpp
index 6735f1a..5b3a062 100644
--- a/WifiInterface.cpp
+++ b/WifiInterface.cpp
@@ -17,7 +17,8 @@
     You should have received a copy of the GNU General Public License
     along with CommandStation.  If not, see <https://www.gnu.org/licenses/>.
 */
-
+#ifndef ARDUINO_AVR_UNO_WIFI_REV2
+// This code is NOT compiled on a unoWifiRev2 processor which uses a different architecture 
 #include "WifiInterface.h"        /* config.h included there */
 #include <avr/pgmspace.h>
 #include "DIAG.h"
@@ -288,7 +289,6 @@ wifiSerialState WifiInterface::setup2(const FSH* SSid, const FSH* password,
     const byte MAX_IP_LENGTH=15;
     char ipString[MAX_IP_LENGTH+1];
     ipString[MAX_IP_LENGTH]='\0'; // protection against missing " character on end. 
-    byte ipLen=0;
     for(byte ipLen=0;ipLen<MAX_IP_LENGTH;ipLen++) {
       while(!wifiStream->available());
       int ipChar=wifiStream->read();
@@ -362,3 +362,5 @@ void WifiInterface::loop() {
     WifiInboundHandler::loop(); 
   }
 }
+
+#endif