diff --git a/Aircraft/Instruments/vertical-speed-6kfpm.xml b/Aircraft/Instruments/vertical-speed-6kfpm.xml
index 068db6459..285dbacaf 100644
--- a/Aircraft/Instruments/vertical-speed-6kfpm.xml
+++ b/Aircraft/Instruments/vertical-speed-6kfpm.xml
@@ -56,7 +56,7 @@ properties' values.
    <transformations>
     <transformation>
      <type>rotation</type>
-     <property>/steam/vertical-speed-fpm</property>
+     <property>/steam/vertical-speed-fps</property>
      <min>-6000.0</min>
      <max>6000.0</max>
      <scale>0.028</scale>
diff --git a/Aircraft/Instruments/vertical.xml b/Aircraft/Instruments/vertical.xml
index 7155869a8..bfb0bbb19 100644
--- a/Aircraft/Instruments/vertical.xml
+++ b/Aircraft/Instruments/vertical.xml
@@ -55,7 +55,7 @@ properties' values.
    <transformations>
     <transformation>
      <type>rotation</type>
-     <property>/steam/vertical-speed-fpm</property>
+     <property>/steam/vertical-speed-fps</property>
      <min>-2000.0</min>
      <max>2000.0</max>
      <scale>0.084</scale>