diff --git a/gc.c b/gc.c
index cdc8891d7c..499d0cda8d 100644
--- a/gc.c
+++ b/gc.c
@@ -353,11 +353,6 @@ rb_gc_shutdown_call_finalizer_p(VALUE obj)
         return true;
 
       case T_SYMBOL:
-        if (RSYMBOL(obj)->fstr &&
-                (BUILTIN_TYPE(RSYMBOL(obj)->fstr) == T_NONE ||
-                    BUILTIN_TYPE(RSYMBOL(obj)->fstr) == T_ZOMBIE)) {
-            RSYMBOL(obj)->fstr = 0;
-        }
         return true;
 
       case T_NONE: