diff --git a/README.md b/README.md
index beb73e0..7b0b638 100644
--- a/README.md
+++ b/README.md
@@ -316,7 +316,7 @@ Sets Windows clipboard content to the given text or a PNG image.
 Name | Type | Required | Description | Example
 --- | --- | --- | --- | ---
 b64Content | string | yes | Base64-encoded content of the clipboard to be set | `QXBwaXVt`
-contentType | 'text' or 'image' | no | Set to 'text' in order to set the given text to the clipboard (the default value). Set to 'image' if `b64Content` contains a base64-encoded payload of a PNG image. | image
+contentType | 'plaintext' or 'image' | no | Set to 'plaintext' in order to set the given text to the clipboard (the default value). Set to 'image' if `b64Content` contains a base64-encoded payload of a PNG image. | image
 
 ### windows: getClipboard
 
@@ -326,7 +326,7 @@ Retrieves Windows clipboard content.
 
 Name | Type | Required | Description | Example
 --- | --- | --- | --- | ---
-contentType | 'text' or 'image' | no | Set to 'text' in order to set the given text to the clipboard (the default value). Set to 'image' to retrieve a base64-encoded payload of a PNG image. | image
+contentType | 'plaintext' or 'image' | no | Set to 'plaintext' in order to set the given text to the clipboard (the default value). Set to 'image' to retrieve a base64-encoded payload of a PNG image. | image
 
 #### Returns
 
diff --git a/lib/commands/clipboard.js b/lib/commands/clipboard.js
index 82913d2..34e28fa 100644
--- a/lib/commands/clipboard.js
+++ b/lib/commands/clipboard.js
@@ -10,7 +10,7 @@ const commands = {};
  */
 
 /**
- * @type {Record<ContentTypeEnum, ContentTypeEnum>}
+ * @type { Record<ContentTypeEnum, ContentTypeEnum>}
  */
 const CONTENT_TYPE = Object.freeze({
   plaintext: 'plaintext',
@@ -35,10 +35,8 @@ commands.windowsSetClipboard = async function windowsSetClipboard (opts = {}) {
     b64Content,
     contentType = CONTENT_TYPE.plaintext,
   } = requireArgs(['b64Content'], opts);
-  if (b64Content && Buffer.from(b64Content, 'base64').toString('base64') !== b64Content || !b64Content) {
-    throw new errors.InvalidArgumentError(
-      `The 'b64Content' argument must be a valid non-empty base64-encoded string`
-    );
+  if (b64Content && Buffer.from(b64Content, 'base64').toString('base64') !== b64Content) {
+    throw new errors.InvalidArgumentError(`The 'b64Content' argument must be a valid base64-encoded string`);
   }
   switch (contentType) {
     case CONTENT_TYPE.plaintext: