diff --git a/src/FSharp.Core/prim-types.fsi b/src/FSharp.Core/prim-types.fsi
index dee677aac31..2b3bcf1ac7c 100644
--- a/src/FSharp.Core/prim-types.fsi
+++ b/src/FSharp.Core/prim-types.fsi
@@ -3524,8 +3524,8 @@ namespace Microsoft.FSharp.Core
         /// 
         /// <example id="id-example">
         /// <code lang="fsharp">
-        /// id 12     //  Evaulates to 12
-        /// id "abc"  //  Evaulates to "abc"
+        /// id 12     //  Evaluates to 12
+        /// id "abc"  //  Evaluates to "abc"
         /// </code>
         /// </example>
         ///