diff --git a/index.html b/index.html
index 2aa4baf3d6c..1e2d3c787c7 100644
--- a/index.html
+++ b/index.html
@@ -86,6 +86,7 @@
 					</div>
 					<div id="settingsView">
 						<div class="version row"><strong>Solidity version:</strong> <span id="version">(loading)</span></div>
+						<div class="row">WARNING: Libraries currently do not work in the simulator, pending a <a href="https://github.com/ethereumjs/ethereumjs-vm/issues/52">feature</a>.</div>
 						<div class="row">Change to: <select id="versionSelector"></select></div>
 						<div class="row">
 							<label for="editorWrap"><input id="editorWrap" type="checkbox">Text Wrap</label>