diff --git a/PARAM_DEF/bepi_lon_hee.xml b/PARAM_DEF/bepi_lon_hee.xml
index 1fb635f..21b3d65 100644
--- a/PARAM_DEF/bepi_lon_hee.xml
+++ b/PARAM_DEF/bepi_lon_hee.xml
@@ -5,6 +5,6 @@
          <baseParam name="HEE"/>
         </vi>
   </get>
-  <process description="LON HAE">atan2($bepi_cruise_all_HEE[2],$bepi_cruise_all_HEE[1])*RAD2DEG</process>
+  <process description="LON HAE">atan2($bepi_cruise_all_HEE[1],$bepi_cruise_all_HEE[0])*RAD2DEG</process>
   <output/>
 </param>
diff --git a/PARAM_DEF/earth_lon_hee.xml b/PARAM_DEF/earth_lon_hee.xml
index 4e18c05..36c2d14 100644
--- a/PARAM_DEF/earth_lon_hee.xml
+++ b/PARAM_DEF/earth_lon_hee.xml
@@ -5,6 +5,6 @@
          <baseParam name="HEE"/>
         </vi>
   </get>
-  <process description="LON HAE">atan2($earth_orb_all_HEE[2],$earth_orb_all_HEE[1])*RAD2DEG</process>
+  <process description="LON HAE">atan2($earth_orb_all_HEE[1],$earth_orb_all_HEE[0])*RAD2DEG</process>
   <output/>
 </param>
diff --git a/PARAM_DEF/mercury_lon_hee.xml b/PARAM_DEF/mercury_lon_hee.xml
index 4aebce1..6ea27a1 100644
--- a/PARAM_DEF/mercury_lon_hee.xml
+++ b/PARAM_DEF/mercury_lon_hee.xml
@@ -5,6 +5,6 @@
          <baseParam name="HEE"/>
         </vi>
   </get>
-  <process description="LON HAE">atan2($mercury_orb_all_HEE[2],$mercury_orb_all_HEE[1])*RAD2DEG</process>
+  <process description="LON HAE">atan2($mercury_orb_all_HEE[1],$mercury_orb_all_HEE[0])*RAD2DEG</process>
   <output/>
 </param>
diff --git a/PARAM_DEF/psp_lon_hee.xml b/PARAM_DEF/psp_lon_hee.xml
index 404d8cd..be30db2 100644
--- a/PARAM_DEF/psp_lon_hee.xml
+++ b/PARAM_DEF/psp_lon_hee.xml
@@ -5,6 +5,6 @@
          <baseParam name="HEE"/>
         </vi>
   </get>
-  <process description="LON HAE">atan2($psp_orb_all_HEE[2],$psp_orb_all_HEE[1])*RAD2DEG</process>
+  <process description="LON HAE">atan2($psp_orb_all_HEE[1],$psp_orb_all_HEE[0])*RAD2DEG</process>
   <output/>
 </param>
diff --git a/PARAM_DEF/so_lon_hee.xml b/PARAM_DEF/so_lon_hee.xml
index 05cbca1..3d100f8 100644
--- a/PARAM_DEF/so_lon_hee.xml
+++ b/PARAM_DEF/so_lon_hee.xml
@@ -5,6 +5,6 @@
          <baseParam name="HEE"/>
         </vi>
   </get>
-  <process description="LON HAE">atan2($so_orb_all_HEE[2],$so_orb_all_HEE[1])*RAD2DEG</process>
+  <process description="LON HAE">atan2($so_orb_all_HEE[1],$so_orb_all_HEE[0])*RAD2DEG</process>
   <output/>
 </param>
diff --git a/PARAM_DEF/venus_lon_hee.xml b/PARAM_DEF/venus_lon_hee.xml
index c5f868a..fddc986 100644
--- a/PARAM_DEF/venus_lon_hee.xml
+++ b/PARAM_DEF/venus_lon_hee.xml
@@ -5,6 +5,6 @@
          <baseParam name="HEE"/>
         </vi>
   </get>
-  <process description="LON HAE">atan2($venus_orb_all_HEE[2],$venus_orb_all_HEE[1])*RAD2DEG</process>
+  <process description="LON HAE">atan2($venus_orb_all_HEE[1],$venus_orb_all_HEE[0])*RAD2DEG</process>
   <output/>
 </param>
--
libgit2 0.21.2