diff --git a/addons/missileguidance/XEH_PREP.hpp b/addons/missileguidance/XEH_PREP.hpp
index 2fc1aa8394e..afdaba260a0 100644
--- a/addons/missileguidance/XEH_PREP.hpp
+++ b/addons/missileguidance/XEH_PREP.hpp
@@ -60,7 +60,6 @@ PREP(mwr_onFired);
 PREP(IR_onFired);
 
 // Navigation OnFired
-PREP(navigationType_lineOfSight);
 PREP(proNav_onFired);
 PREP(line_onFired);