diff --git a/aircraft/f15/f15.xml b/aircraft/f15/f15.xml
index 534ff264f..7ba9f6263 100644
--- a/aircraft/f15/f15.xml
+++ b/aircraft/f15/f15.xml
@@ -305,7 +305,7 @@
             </kinematic>
 
             <aerosurface_scale name="elevator position">
-                <input>fcs/pitch-trim-sum</input>
+                <input>fcs/elevator-pos-norm</input>
                 <gain>0.01745</gain>
                 <domain>
                     <min>-1</min>