diff --git a/timing/timing.c b/timing/timing.c
index 54680c32f7abf62f86452b6ff5684058c7f245de..491ca1865b2bda5c5b3a0e6c9b39a5b48f244b5c 100644
--- a/timing/timing.c
+++ b/timing/timing.c
@@ -597,8 +597,8 @@ parse_arguments(int *_argc, char ***_argv, int *iparam, int *start, int *stop, i
         case 'a' : iparam[IPARAM_RHBLK         ] = atoi(optarg); break;
         case 'P' : iparam[IPARAM_P             ] = atoi(optarg); break;
         case 'M' : iparam[IPARAM_MODE          ] = atoi(optarg); break;
-        case 'n' : iparam[IPARAM_NB            ] = atoi(optarg); break;
-        case 'm' : iparam[IPARAM_MB            ] = atoi(optarg); break;
+        case 'n' : iparam[IPARAM_NB            ] = atoi(optarg);
+                   iparam[IPARAM_MB            ] = atoi(optarg); break;
         case 'N' : get_range(optarg, start, stop, step); break;
         case 'h' : show_help(argv[0]); break;
         default: