diff --git a/Systems/a320-aerodynamics.xml b/Systems/a320-aerodynamics.xml
index e0fb3535..52aa6654 100644
--- a/Systems/a320-aerodynamics.xml
+++ b/Systems/a320-aerodynamics.xml
@@ -500,7 +500,7 @@
 				<property>aero/qbar-psf</property>
 				<property>metrics/Sw-sqft</property>
 				<property>metrics/bw-ft</property>
-				<property>fcs/rudder-pos-rad</property>
+				<toradians><property>hydraulics/rudder/final-deg</property></toradians>
 				<value>0.01</value>
 			</product>
 		</function>
diff --git a/revision.txt b/revision.txt
index 4a25a85f..667d7145 100644
--- a/revision.txt
+++ b/revision.txt
@@ -1 +1 @@
-4665
\ No newline at end of file
+4666
\ No newline at end of file