diff --git a/common/web/types/src/kvk/kvk-file-writer.ts b/common/web/types/src/kvk/kvk-file-writer.ts
index a9845c0d853..6b7d2831564 100644
--- a/common/web/types/src/kvk/kvk-file-writer.ts
+++ b/common/web/types/src/kvk/kvk-file-writer.ts
@@ -29,33 +29,33 @@ export default class KvkFileWriter {
       header: {
         identifier: BUILDER_KVK_HEADER_IDENTIFIER,
         version: BUILDER_KVK_HEADER_VERSION,
-        associatedKeyboard: {len:0,str:''},
+        associatedKeyboard: {len:1,str:''},
         flags: source.header.flags,
         ansiFont:{
           color: VISUAL_KEYBOARD_TEXT_COLOR,
           size: source.header.ansiFont.size,
-          name: {len:0,str:''}
+          name: {len:1,str:''}
         },
         unicodeFont:{
           color: VISUAL_KEYBOARD_TEXT_COLOR,
           size: source.header.unicodeFont.size,
-          name: {len:0,str:''}
+          name: {len:1,str:''}
         },
       },
       keyCount: source.keys.length,
       keys:[]
     };
 
-    this.setString(binary.header.associatedKeyboard, source.header.associatedKeyboard);
-    this.setString(binary.header.ansiFont.name, source.header.ansiFont.name);
-    this.setString(binary.header.unicodeFont.name, source.header.unicodeFont.name);
+    this.setString(binary.header.associatedKeyboard, source.header.associatedKeyboard || '');
+    this.setString(binary.header.ansiFont.name, source.header.ansiFont.name || '');
+    this.setString(binary.header.unicodeFont.name, source.header.unicodeFont.name || '');
 
     for(let sourceKey of source.keys) {
       const binaryKey: BUILDER_KVK_KEY = {
         flags: sourceKey.flags,
         vkey: sourceKey.vkey,
         shift: sourceKey.shift,
-        text: { len: 0, str: '' },
+        text: { len: 1, str: '' },
         bitmapSize: sourceKey.bitmap ? sourceKey.bitmap.byteLength : 0,
         bitmapData: sourceKey.bitmap ? Array.from(sourceKey.bitmap) : []
       };
diff --git a/common/web/types/tests/kvk/kvk-file-writer.tests.ts b/common/web/types/tests/kvk/kvk-file-writer.tests.ts
index b579446cf62..4553123199c 100644
--- a/common/web/types/tests/kvk/kvk-file-writer.tests.ts
+++ b/common/web/types/tests/kvk/kvk-file-writer.tests.ts
@@ -68,7 +68,7 @@ describe('Test of KVK-File-Writer', () => {
       const binary: BUILDER_KVK_FILE = writer['build'](vk);
       checkBuilderKvkFile(binary, vk);
     });
-    it.skip('can handle a null associatedKeyboard', () => {
+    it('can handle a null associatedKeyboard', () => {
       const vk_associatedKeyboard: string = null;
       const vk = initVisualKeyboard([
           initVisualKeyboardKey(0),
@@ -86,7 +86,7 @@ describe('Test of KVK-File-Writer', () => {
       const binary: BUILDER_KVK_FILE = writer['build'](vk);
       checkBuilderKvkFile(binary, vk);
     });
-    it.skip('can handle a null ansiFont name', () => {
+    it('can handle a null ansiFont name', () => {
       const vk_ansiFont_name: string = null;
       const vk = initVisualKeyboard([
           initVisualKeyboardKey(0),
@@ -104,7 +104,7 @@ describe('Test of KVK-File-Writer', () => {
       const binary: BUILDER_KVK_FILE = writer['build'](vk);
       checkBuilderKvkFile(binary, vk);
     });
-    it.skip('can handle a null unicodeFont name', () => {
+    it('can handle a null unicodeFont name', () => {
       const vk_unicodeFont_name: string = null;
       const vk = initVisualKeyboard([
           initVisualKeyboardKey(0),