diff --git a/src/options.c b/src/options.c
index 42da3e524..1acff8f3f 100644
--- a/src/options.c
+++ b/src/options.c
@@ -4378,7 +4378,8 @@ optfn_boolean(int optidx, int req, boolean negated, char *opts, char *op)
         }
         if (iflags.debug_fuzzer && !g.opt_initial) {
             /* don't randomly toggle this/these */
-            if (optidx == opt_silent)
+            if ((optidx == opt_silent)
+                || (optidx == opt_perm_invent))
                 return optn_ok;
         }
         /* Before the change */