diff --git a/client/adventureMap/AdventureMapInterface.cpp b/client/adventureMap/AdventureMapInterface.cpp
index 863e48ba8..fc2d2a61c 100644
--- a/client/adventureMap/AdventureMapInterface.cpp
+++ b/client/adventureMap/AdventureMapInterface.cpp
@@ -925,7 +925,7 @@ void AdventureMapInterface::onScreenResize()
 		activate();
 }
 
-bool AdventureMapInterface::isValidAdventureSpellTarget(int3 targetPosition)
+bool AdventureMapInterface::isValidAdventureSpellTarget(int3 targetPosition) const
 {
 	spells::detail::ProblemImpl problem;
 
diff --git a/client/adventureMap/AdventureMapInterface.h b/client/adventureMap/AdventureMapInterface.h
index 7f7363e80..cd63e5b24 100644
--- a/client/adventureMap/AdventureMapInterface.h
+++ b/client/adventureMap/AdventureMapInterface.h
@@ -93,7 +93,7 @@ private:
 	void performSpellcasting(const int3 & castTarget);
 
 	/// performs clientside validation of valid targets for adventure spells
-	bool isValidAdventureSpellTarget(int3 targetPosition);
+	bool isValidAdventureSpellTarget(int3 targetPosition) const;
 
 	/// dim interface if some windows opened
 	void dim(Canvas & to);
diff --git a/lib/spells/AdventureSpellMechanics.h b/lib/spells/AdventureSpellMechanics.h
index 4b745d66d..02f8c01aa 100644
--- a/lib/spells/AdventureSpellMechanics.h
+++ b/lib/spells/AdventureSpellMechanics.h
@@ -29,8 +29,8 @@ class AdventureSpellMechanics : public IAdventureSpellMechanics
 public:
 	AdventureSpellMechanics(const CSpell * s);
 
-	bool canBeCast(spells::Problem & problem, const CGameInfoCallback * cb, const spells::Caster * caster) const override final;
-	bool canBeCastAt(spells::Problem & problem, const CGameInfoCallback * cb, const spells::Caster * caster, const int3 & pos) const override final;
+	bool canBeCast(spells::Problem & problem, const CGameInfoCallback * cb, const spells::Caster * caster) const final;
+	bool canBeCastAt(spells::Problem & problem, const CGameInfoCallback * cb, const spells::Caster * caster, const int3 & pos) const final;
 
 	bool adventureCast(SpellCastEnvironment * env, const AdventureSpellCastParameters & parameters) const override final;
 protected: