diff --git a/include/types.h b/include/types.h
index d3986c2d0..a9c0e0b85 100644
--- a/include/types.h
+++ b/include/types.h
@@ -2334,6 +2334,7 @@ typedef struct user_options
   #endif
   bool         force;
   bool         deprecated_check;
+  bool         dynamic_x;
   bool         hwmon;
   bool         hash_info;
   bool         hex_charset;
diff --git a/src/user_options.c b/src/user_options.c
index d0164b168..1ab73e1b6 100644
--- a/src/user_options.c
+++ b/src/user_options.c
@@ -206,6 +206,7 @@ int user_options_init (hashcat_ctx_t *hashcat_ctx)
   user_options->debug_file                = NULL;
   user_options->debug_mode                = DEBUG_MODE;
   user_options->deprecated_check          = DEPRECATED_CHECK;
+  user_options->dynamic_x                 = DYNAMIC_X;
   user_options->encoding_from             = ENCODING_FROM;
   user_options->encoding_to               = ENCODING_TO;
   user_options->force                     = FORCE;
@@ -402,6 +403,7 @@ int user_options_getopt (hashcat_ctx_t *hashcat_ctx, int argc, char **argv)
       case IDX_LEFT:                      user_options->left                      = true;                            break;
       case IDX_ADVICE_DISABLE:            user_options->advice                    = false;                           break;
       case IDX_USERNAME:                  user_options->username                  = true;                            break;
+      case IDX_DYNAMIC_X:                 user_options->dynamic_x                 = true;                            break;
       case IDX_REMOVE:                    user_options->remove                    = true;                            break;
       case IDX_REMOVE_TIMER:              user_options->remove_timer              = hc_strtoul (optarg, NULL, 10);
                                           user_options->remove_timer_chgd         = true;                            break;
@@ -3229,6 +3231,7 @@ void user_options_logger (hashcat_ctx_t *hashcat_ctx)
   logfile_top_uint   (user_options->bitmap_max);
   logfile_top_uint   (user_options->bitmap_min);
   logfile_top_uint   (user_options->debug_mode);
+  logfile_top_uint   (user_options->dynamic_x);
   logfile_top_uint   (user_options->hash_info);
   logfile_top_uint   (user_options->force);
   logfile_top_uint   (user_options->hwmon);