diff --git a/docs/tool-reference.md b/docs/tool-reference.md
index 13e0a0ff2..04a9db529 100644
--- a/docs/tool-reference.md
+++ b/docs/tool-reference.md
@@ -292,8 +292,8 @@
 
 ### `evaluate_script`
 
-**Description:** Evaluate a JavaScript function inside the currently selected page. Returns the response as JSON
-so returned values have to JSON-serializable.
+**Description:** Evaluate a JavaScript function inside the currently selected page. Returns the response as JSON,
+so returned values have to be JSON-serializable.
 
 **Parameters:**
 
diff --git a/src/tools/script.ts b/src/tools/script.ts
index de28fe0b4..f3bc3c3c5 100644
--- a/src/tools/script.ts
+++ b/src/tools/script.ts
@@ -12,8 +12,8 @@ import {defineTool} from './ToolDefinition.js';
 
 export const evaluateScript = defineTool({
   name: 'evaluate_script',
-  description: `Evaluate a JavaScript function inside the currently selected page. Returns the response as JSON
-so returned values have to JSON-serializable.`,
+  description: `Evaluate a JavaScript function inside the currently selected page. Returns the response as JSON,
+so returned values have to be JSON-serializable.`,
   annotations: {
     category: ToolCategory.DEBUGGING,
     readOnlyHint: false,