diff --git a/cmake_targets/autotests/test_case_list.xml b/cmake_targets/autotests/test_case_list.xml
index 856b39c9fd..fc24b48f11 100755
--- a/cmake_targets/autotests/test_case_list.xml
+++ b/cmake_targets/autotests/test_case_list.xml
@@ -116,7 +116,7 @@
       <main_exec>nr_pbchsim</main_exec>
       <main_exec_args>-s-11 -S-8 -n10 -R106 -N2
                       -s-11 -S-8 -n10 -o8000 -I -R106
-                      -s-11 -S-8 -n10 -R106 -O6</main_exec_args>
+                      -s-11 -S-8 -n10 -R106 -c6</main_exec_args>
       <tags>test1 test2 test3</tags>
       <search_expr_true>PBCH test OK</search_expr_true>
       <search_expr_false>segmentation fault|assertion|exiting|fatal</search_expr_false>
diff --git a/openair1/SIMULATION/NR_PHY/pbchsim.c b/openair1/SIMULATION/NR_PHY/pbchsim.c
index d294bd6052..716cf5e2fc 100644
--- a/openair1/SIMULATION/NR_PHY/pbchsim.c
+++ b/openair1/SIMULATION/NR_PHY/pbchsim.c
@@ -244,15 +244,20 @@ int main(int argc, char **argv)
     exit_fun("[NR_PBCHSIM] Error, configuration module init failed\n");
   }
 
-  while ((c = getopt (argc, argv, "--:F:g:hIL:m:M:n:N:o:O:P:r:R:s:S:x:y:z:")) != -1) {
+  while ((c = getopt (argc, argv, "--:c:F:g:hIL:m:M:n:N:o:P:r:R:s:S:x:y:z:")) != -1) {
 
-    /* ignore long options starting with '--' and their arguments that are handled by configmodule */
+    /* ignore long options starting with '--', option '-O' and their arguments that are handled by configmodule */
     /* with this opstring getopt returns 1 for non-option arguments, refer to 'man 3 getopt' */
     if (c == 1 || c == '-')
       continue;
 
     printf("handling optarg %c\n",c);
     switch (c) {
+
+    case 'c':
+      ssb_subcarrier_offset = atoi(optarg);
+      break;
+
     /*case 'f':
       write_output_file=1;
       output_fd = fopen(optarg,"w");
@@ -349,10 +354,6 @@ int main(int argc, char **argv)
       Nid_cell = atoi(optarg);
       break;
 
-    case 'O':
-      ssb_subcarrier_offset = atoi(optarg);
-      break;
-
     case 'o':
       cfo = atof(optarg);
 #ifdef DEBUG_NR_PBCHSIM
@@ -440,6 +441,7 @@ int main(int argc, char **argv)
       printf("%s -F input_filename -g channel_mod -h(elp) -I(nitial sync) -L log_lvl -n n_frames -M SSBs -n frames -N cell_id -o FO -P phase -r seed -R RBs -s snr0 -S snr1 -x transmission_mode -y TXant -z RXant\n",
              argv[0]);
       //printf("-A Interpolation_filname Run with Abstraction to generate Scatter plot using interpolation polynomial in file\n");
+      printf("-c SSB subcarrier offset\n");
       //printf("-C Generate Calibration information for Abstraction (effective SNR adjustment to remove Pe bias w.r.t. AWGN)\n");
       //printf("-d Use TDD\n");
       //printf("-f Output filename (.txt format) for Pe/SNR results\n");
@@ -455,7 +457,6 @@ int main(int argc, char **argv)
       printf("-n Number of frames to simulate\n");
       printf("-N Nid_cell\n");
       printf("-o Carrier frequency offset in Hz\n");
-      printf("-O SSB subcarrier offset\n");
       //printf("-O oversampling factor (1,2,4,8,16)\n");
       //printf("-p Use extended prefix mode\n");
       printf("-P PBCH phase, allowed values 0-3\n");