diff --git a/oaienv b/oaienv
index 383c75a4b146859d63f75eefd792df1b2475f9b2..f6b298debf69e2e24c2c65cce458291b9ff0a513 100644
--- a/oaienv
+++ b/oaienv
@@ -5,7 +5,8 @@ export OPENAIR1_DIR=$OPENAIR_HOME/openair1
 export OPENAIR2_DIR=$OPENAIR_HOME/openair2
 export OPENAIR3_DIR=$OPENAIR_HOME/openair3
 export OPENAIR_TARGETS=$OPENAIR_HOME/targets
-export OPENAIRITS_DIR=$OPENAIR_HOME/openairITS
+
+export PATH=$PATH:$OPENAIR_TARGETS/bin
 
 alias  oai='cd $OPENAIR_HOME'
 alias oai0='cd $OPENAIR0_DIR'
diff --git a/targets/RT/USER/lte-softmodem.c b/targets/RT/USER/lte-softmodem.c
index 3bd561aedcb5f67ff8d36e25ba24c6ed6da1b72e..ec76faa87ede7b2fd08b8503b5162d5e37ae252f 100644
--- a/targets/RT/USER/lte-softmodem.c
+++ b/targets/RT/USER/lte-softmodem.c
@@ -289,6 +289,8 @@ double bw = 10.0e6;
 
 static int                      tx_max_power[MAX_NUM_CCs]; /* =  {0,0}*/;
 
+int chain_offset=0;
+
 #ifndef EXMIMO
 char ref[128] = "internal";
 char channels[128] = "0";
@@ -2057,7 +2059,7 @@ static void get_options (int argc, char **argv)
     {NULL, 0, NULL, 0}
   };
 
-  while ((c = getopt_long (argc, argv, "C:dK:g:F:G:hqO:m:SUVRM:r:P:Ws:t:Tx:",long_options,NULL)) != -1) {
+  while ((c = getopt_long (argc, argv, "a:C:dK:g:F:G:hqO:m:SUVRM:r:P:Ws:t:Tx:",long_options,NULL)) != -1) {
     switch (c) {
     case LONG_OPTION_MAXPOWER:
       tx_max_power[0]=atoi(optarg);
@@ -2145,6 +2147,10 @@ static void get_options (int argc, char **argv)
 
       break;
 
+    case 'a':
+      chain_offset = atoi(optarg);
+      break;
+
     case 'd':
 #ifdef XFORMS
       do_forms=1;
@@ -3053,7 +3059,7 @@ int main( int argc, char **argv )
 
   for(CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
     rf_map[CC_id].card=0;
-    rf_map[CC_id].chain=CC_id;
+    rf_map[CC_id].chain=CC_id+chain_offset;
   }
 
   // connect the TX/RX buffers