diff --git a/src/index.ts b/src/index.ts
index 8b5e222..29cff99 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -48,8 +48,13 @@ function TextDirectionPlugin({ types }: { types: string[] }) {
           if (node.attrs.dir !== null && node.textContent.length > 0) {
             return;
           }
+          const newTextDirection = getTextDirection(node.textContent)
+          if (node.attrs.dir === newTextDirection) {
+            return;
+          }
+
           const marks = tr.storedMarks || [];
-          tr.setNodeAttribute(pos, "dir", getTextDirection(node.textContent));
+          tr.setNodeAttribute(pos, "dir", newTextDirection);
           // `tr.setNodeAttribute` resets the stored marks so we'll restore them
           for (const mark of marks) {
             tr.addStoredMark(mark);