diff --git a/src/reports.cpp b/src/reports.cpp
index 6af0974116a..e6f818be767 100644
--- a/src/reports.cpp
+++ b/src/reports.cpp
@@ -417,7 +417,6 @@ static config unit_hp(const unit* u)
 		<< '/' << u->max_hitpoints() << naps;
 
 	std::set<std::string> resistances_table;
-	utils::string_map resistances = u->get_base_resistances();
 
 	bool att_def_diff = false;
 	map_location displayed_unit_hex = resources::screen->displayed_unit_hex();