diff --git a/docx-wasm/js/index.ts b/docx-wasm/js/index.ts
index 05a2d41..e781a7d 100644
--- a/docx-wasm/js/index.ts
+++ b/docx-wasm/js/index.ts
@@ -21,25 +21,25 @@ import * as wasm from "./pkg";
 
 const convertBorderType = (t: BorderType) => {
   switch (t) {
-    case "Nil":
+    case "nil":
       return wasm.BorderType.Nil;
-    case "None":
+    case "none":
       return wasm.BorderType.None;
-    case "Single":
+    case "single":
       return wasm.BorderType.Single;
-    case "Thick":
+    case "thick":
       return wasm.BorderType.Thick;
-    case "Double":
+    case "double":
       return wasm.BorderType.Double;
-    case "Dotted":
+    case "dotted":
       return wasm.BorderType.Dotted;
-    case "Dashed":
+    case "dashed":
       return wasm.BorderType.Dashed;
-    case "DotDash":
+    case "dotDash":
       return wasm.BorderType.DotDash;
-    case "DotDotDash":
+    case "dotDotDash":
       return wasm.BorderType.DotDotDash;
-    case "Triple":
+    case "triple":
       return wasm.BorderType.Triple;
     default:
       return wasm.BorderType.Single;
diff --git a/docx-wasm/js/table-cell-border.ts b/docx-wasm/js/table-cell-border.ts
index e49f8a9..612a260 100644
--- a/docx-wasm/js/table-cell-border.ts
+++ b/docx-wasm/js/table-cell-border.ts
@@ -1,14 +1,14 @@
 export type BorderType =
-  | "Nil"
-  | "None"
-  | "Single"
-  | "Thick"
-  | "Double"
-  | "Dotted"
-  | "Dashed"
-  | "DotDash"
-  | "DotDotDash"
-  | "Triple";
+  | "nil"
+  | "none"
+  | "single"
+  | "thick"
+  | "double"
+  | "dotted"
+  | "dashed"
+  | "dotDash"
+  | "dotDotDash"
+  | "triple";
 
 export type BorderPosition =
   | "left"
diff --git a/docx-wasm/js/table-cell-borders.ts b/docx-wasm/js/table-cell-borders.ts
index ddbcfab..04c2d56 100644
--- a/docx-wasm/js/table-cell-borders.ts
+++ b/docx-wasm/js/table-cell-borders.ts
@@ -35,7 +35,7 @@ export class TableCellBorders {
   }
 
   clear(position: BorderPosition) {
-    let nil = new TableCellBorder(position).border_type("Nil");
+    let nil = new TableCellBorder(position).border_type("nil");
     switch (position) {
       case "top":
         this.top = nil;
@@ -54,12 +54,12 @@ export class TableCellBorders {
   }
 
   clearAll() {
-    this.top = new TableCellBorder("top").border_type("Nil");
-    this.left = new TableCellBorder("left").border_type("Nil");
-    this.bottom = new TableCellBorder("bottom").border_type("Nil");
-    this.right = new TableCellBorder("right").border_type("Nil");
-    this.insideH = new TableCellBorder("insideH").border_type("Nil");
-    this.insideV = new TableCellBorder("insideV").border_type("Nil");
+    this.top = new TableCellBorder("top").border_type("nil");
+    this.left = new TableCellBorder("left").border_type("nil");
+    this.bottom = new TableCellBorder("bottom").border_type("nil");
+    this.right = new TableCellBorder("right").border_type("nil");
+    this.insideH = new TableCellBorder("insideH").border_type("nil");
+    this.insideV = new TableCellBorder("insideV").border_type("nil");
     return this;
   }
 }
diff --git a/docx-wasm/js/table-cell.ts b/docx-wasm/js/table-cell.ts
index 75b4f47..c91c271 100644
--- a/docx-wasm/js/table-cell.ts
+++ b/docx-wasm/js/table-cell.ts
@@ -53,7 +53,7 @@ export class TableCell {
   clearBorder(position: BorderPosition) {
     this.property.borders[
       position.toLowerCase() as PositionKeys
-    ] = new TableCellBorder(position).border_type("Nil");
+    ] = new TableCellBorder(position).border_type("nil");
     return this;
   }
 }
diff --git a/docx-wasm/package.json b/docx-wasm/package.json
index e7b1d2e..57aafe2 100644
--- a/docx-wasm/package.json
+++ b/docx-wasm/package.json
@@ -1,6 +1,6 @@
 {
   "name": "docx-wasm",
-  "version": "0.0.65",
+  "version": "0.0.66",
   "main": "dist/node/index.js",
   "browser": "dist/web/index.js",
   "author": "bokuweb <bokuweb12@gmail.com>",