diff --git a/docs/_layouts/default.html b/docs/_layouts/default.html
index b2339cf0b..20c6d877a 100644
--- a/docs/_layouts/default.html
+++ b/docs/_layouts/default.html
@@ -10,7 +10,7 @@
     <a href="/" alt="NSubstitute">
       <img src="/images/nsubstitute-100x100.png" style="float: left; margin-right: 15px; width: 100px; height: 100px;" />
       <h1 style="display: inline"> NSubstitute </h1> <br />
-      <span><i>A friendly substitute for .NET mocking frameworks</i></span>
+      <span><i>A friendly substitute for .NET mocking libraries</i></span>
     </a>
   </div>
   <div id="nav">
diff --git a/src/NSubstitute/NSubstitute.csproj b/src/NSubstitute/NSubstitute.csproj
index a98f4e953..4134a3c7d 100644
--- a/src/NSubstitute/NSubstitute.csproj
+++ b/src/NSubstitute/NSubstitute.csproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <Description>NSubstitute is a friendly substitute for .NET mocking frameworks. It has a simple, succinct syntax to help developers write clearer tests. NSubstitute is designed for Arrange-Act-Assert (AAA) testing and with Test Driven Development (TDD) in mind.</Description>
+    <Description>NSubstitute is a friendly substitute for .NET mocking libraries. It has a simple, succinct syntax to help developers write clearer tests. NSubstitute is designed for Arrange-Act-Assert (AAA) testing and with Test Driven Development (TDD) in mind.</Description>
     <Version>3.0.0</Version>
     <Authors>Anthony Egerton;David Tchepak;Alexandr Nikitin;Alex Povar</Authors>
     <TargetFrameworks>netstandard1.3;netstandard2.0;net45;net46</TargetFrameworks>