diff --git a/Models/Instruments/OHpanel/OHpanel.xml b/Models/Instruments/OHpanel/OHpanel.xml
index 155e5f8f..238dc7d2 100644
--- a/Models/Instruments/OHpanel/OHpanel.xml
+++ b/Models/Instruments/OHpanel/OHpanel.xml
@@ -3588,6 +3588,10 @@
 				<value>1</value>
 				<value>2</value>
 			</binding>
+			<binding>
+				<command>nasal</command>
+				<script>setprop("/sim/sounde/knb1", 1);</script>
+			</binding>
 		</action>
 		<action>
 			<button>1</button>
@@ -3600,6 +3604,10 @@
 				<value>1</value>
 				<value>0</value>
 			</binding>
+			<binding>
+				<command>nasal</command>
+				<script>setprop("/sim/sounde/knb1", 1);</script>
+			</binding>
 		</action>
 	</animation>
 	<animation>
diff --git a/revision.txt b/revision.txt
index 9bf7b0b1..f4a8e832 100644
--- a/revision.txt
+++ b/revision.txt
@@ -1 +1 @@
-1512
\ No newline at end of file
+1513
\ No newline at end of file