diff --git a/addons/overheating/XEH_PREP.hpp b/addons/overheating/XEH_PREP.hpp
index 5a1d3c5387..865a049569 100644
--- a/addons/overheating/XEH_PREP.hpp
+++ b/addons/overheating/XEH_PREP.hpp
@@ -3,6 +3,7 @@ PREP(calculateCooling);
 PREP(canUnjam);
 PREP(canSwapBarrel);
 PREP(canCheckSpareBarrelsTemperatures);
+PREP(canCoolWeaponWithItem);
 PREP(checkSpareBarrelsTemperatures);
 PREP(checkTemperature);
 PREP(clearJam);