--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1983,7 +1983,7 @@ asmlinkage long sys_prctl(int option, uno
                        error = current->mm->dumpable;
                        break;
                case PR_SET_DUMPABLE:
-                       if (arg2 < 0 || arg2 > 2) {
+                       if (arg2 < 0 || arg2 > 1) {
                                error = -EINVAL;
                                break;
                        }