diff --git a/index.html b/index.html
index 323edc3..5f387a5 100644
--- a/index.html
+++ b/index.html
@@ -609,7 +609,7 @@
 
 								<label>Null Data</label> <span class="text-muted text-normal">(80 byte limit, <i>40 bytes recommended</i>)</span>
 								<p class="checkbox">
-									<label><input type="checkbox" id="opReturn" class="checkbox-inline"> Allow data to be sent within the transaction and stored in the blockchain by using <a href="https://bitcoin.org/en/developer-guide#null-data" target="_"blank">OP_RETURN</a>.</label>
+									<label><input type="checkbox" id="opReturn" class="checkbox-inline"> Allow data to be sent within the transaction and stored in the blockchain by using <a href="https://bitcoin.org/en/developer-guide#null-data" target="_blank">OP_RETURN</a>.</label>
 									<div class="text-muted">When using this option you may enter a hex string or address into the address field on the output tab.</div>
 								</p>