diff --git a/lib/validation.js b/lib/validation.js
index 71cbbb307..0f4e6bc13 100644
--- a/lib/validation.js
+++ b/lib/validation.js
@@ -1003,7 +1003,7 @@ function revalidateMask(pos, validTest, fromIsValid, validatedPos) {
     for (i = validTest ? end : end - 1; i <= lvp; i++) {
       if (
         (t = positionsClone[i]) !== undefined &&
-        t.generatedInput !== true &&
+        (opts.shiftPositions !== true || t.generatedInput !== true) &&
         (i >= end ||
           (i >= begin &&
             IsEnclosedStatic(i, positionsClone, {