diff --git a/mission/controller/acs/AcsParameters.h b/mission/controller/acs/AcsParameters.h
index 4d6aa14a..8dc6e1ee 100644
--- a/mission/controller/acs/AcsParameters.h
+++ b/mission/controller/acs/AcsParameters.h
@@ -817,7 +817,7 @@ class AcsParameters : public HasParametersIF {
 
     double sunMagAngleMin = 5 * M_PI / 180;
 
-    double sunTargetDirLeop[3] = {0, .5, .5};
+    double sunTargetDirLeop[3] = {0, sqrt(.5), sqrt(.5)};
     double sunTargetDir[3] = {0, 0, 1};
 
     double satRateRef[3] = {0, 0, 0};