3 files changed, 6 insertions, 5 deletions
diff --git a/src/openvic-simulation/misc/Define.hpp b/src/openvic-simulation/misc/Define.hpp
index 64eb605..3f7b3dc 100644
--- a/src/openvic-simulation/misc/Define.hpp
+++ b/src/openvic-simulation/misc/Define.hpp
@@ -14,7 +14,7 @@ namespace OpenVic {
 		enum class Type : unsigned char { Date, Country, Economy, Military, Diplomacy, Pops, Ai, Graphics };
 
 	private:
-		const std::string PROPERTY(value);
+		std::string PROPERTY(value);
 		const Type PROPERTY(type);
 
 		Define(std::string_view new_identifier, std::string&& new_value, Type new_type);
diff --git a/src/openvic-simulation/misc/Modifier.cpp b/src/openvic-simulation/misc/Modifier.cpp
index 25d0cf9..4d6abb7 100644
--- a/src/openvic-simulation/misc/Modifier.cpp
+++ b/src/openvic-simulation/misc/Modifier.cpp
@@ -276,7 +276,7 @@ bool ModifierManager::register_complex_modifier(std::string_view identifier) {
 }
 
 std::string ModifierManager::get_flat_identifier(
-	const std::string_view complex_modifier_identifier, const std::string_view variant_identifier
+	std::string_view complex_modifier_identifier, std::string_view variant_identifier
 ) {
 	return StringUtils::append_string_views(complex_modifier_identifier, " ", variant_identifier);
 }
diff --git a/src/openvic-simulation/misc/Modifier.hpp b/src/openvic-simulation/misc/Modifier.hpp
index 798b01d..58b335d 100644
--- a/src/openvic-simulation/misc/Modifier.hpp
+++ b/src/openvic-simulation/misc/Modifier.hpp
@@ -74,7 +74,7 @@ namespace OpenVic {
 		const icon_t PROPERTY(icon);
 
 	protected:
-		Modifier(std::string_view new_identifier, ModifierValue&& new_values, icon_t new_icon);
+		Modifier(std::string_view new_identifier, ModifierValue&& new_values, icon_t new_icon = 0);
 
 	public:
 		Modifier(Modifier&&) = default;
@@ -135,8 +135,9 @@ namespace OpenVic {
 		);
 
 		bool register_complex_modifier(std::string_view identifier);
-		static std::string
-		get_flat_identifier(const std::string_view complex_modifier_identifier, const std::string_view variant_identifier);
+		static std::string get_flat_identifier(
+			std::string_view complex_modifier_identifier, std::string_view variant_identifier
+		);
 
 		bool setup_modifier_effects();