diff --git a/solanaceae/util/event_provider.hpp b/solanaceae/util/event_provider.hpp
index 410d54e..fa869f7 100644
--- a/solanaceae/util/event_provider.hpp
+++ b/solanaceae/util/event_provider.hpp
@@ -2,6 +2,7 @@
 
 #include <array>
 #include <vector>
+#include <cstddef>
 
 template<typename EventI>
 struct EventProviderI {
@@ -11,13 +12,13 @@ struct EventProviderI {
 
 	// TODO: unsub
 	virtual void subscribe(EventI* object, const enumType event_type) {
-		_subscribers.at(size_t(event_type)).push_back(object);
+		_subscribers.at(static_cast<size_t>(event_type)).push_back(object);
 	}
 
 	protected:
 		template<typename T>
 		bool dispatch(enumType event_type, const T& event) {
-			for (auto* zei : _subscribers.at(size_t(event_type))) {
+			for (auto* zei : _subscribers.at(static_cast<size_t>(event_type))) {
 				if (zei->onEvent(event)) {
 					return true;
 				}
@@ -28,7 +29,7 @@ struct EventProviderI {
 	protected:
 		std::array<
 			std::vector<EventI*>,
-			size_t(enumType::MAX)
+			static_cast<size_t>(enumType::MAX)
 		> _subscribers;
 };