diff --git a/PARAM_DEF/bepi_lat_hae.xml b/PARAM_DEF/bepi_lat_hae.xml
index cf2162c..d4088a5 100644
--- a/PARAM_DEF/bepi_lat_hae.xml
+++ b/PARAM_DEF/bepi_lat_hae.xml
@@ -5,6 +5,6 @@
          <baseParam name="HEE"/>
         </vi>
   </get>
-  <process description="LAT HAE">atan($bepi_cruise_all_HEE[3]/sqrt(($bepi_cruise_all_HEE[1])^2 + ($bepi_cruise_all_HEE[2])^2))*RAD2DEG</process>
+  <process description="LAT HAE">atan($bepi_cruise_all_HEE[3]/sqrt(($bepi_cruise_all_HEE[1])+($bepi_cruise_all_HEE[2])))*RAD2DEG</process>
   <output/>
 </param>
\ No newline at end of file
--
libgit2 0.21.2