diff --git a/deps/ox/src/ox/event/signal.hpp b/deps/ox/src/ox/event/signal.hpp
index 4cea924c..a9c40995 100644
--- a/deps/ox/src/ox/event/signal.hpp
+++ b/deps/ox/src/ox/event/signal.hpp
@@ -19,6 +19,8 @@ class SignalHandler;
 
 #ifndef OX_OS_BareMetal
 
+namespace detail {
+
 template<typename T>
 struct isError {
 	static constexpr bool value = false;
@@ -29,6 +31,8 @@ struct isError<Error> {
 	static constexpr bool value = true;
 };
 
+}
+
 template<class... Args>
 class Signal {
 	private:
@@ -52,7 +56,7 @@ class Signal {
 			}
 
 			void call(Args... args) final {
-				if constexpr(isError<decltype(f(args...))>::value) {
+				if constexpr(detail::isError<decltype(f(args...))>::value) {
 					oxThrowError(f(args...));
 				} else {
 					f(args...);
@@ -71,7 +75,7 @@ class Signal {
 			}
 
 			void call(Args... args) final {
-				if constexpr(isError<decltype((m_receiver->*(m_methodPtr))(args...))>::value) {
+				if constexpr(detail::isError<decltype((m_receiver->*(m_methodPtr))(args...))>::value) {
 					oxThrowError((m_receiver->*(m_methodPtr))(args...));
 				} else {
 					f(args...);
@@ -98,7 +102,7 @@ class Signal {
 			}
 
 			void call(Args... args) final {
-				if constexpr(isError<decltype((m_receiver->*(m_methodPtr))(args...))>::value) {
+				if constexpr(detail::isError<decltype((m_receiver->*(m_methodPtr))(args...))>::value) {
 					oxThrowError((m_receiver->*(m_methodPtr))(args...));
 				} else {
 					(m_receiver->*(m_methodPtr))(args...);