--- a/src/in_ncsf/SSEQPlayer/common.h
+++ b/src/in_ncsf/SSEQPlayer/common.h
@@ -124,7 +124,7 @@
 inline constexpr int REC_STRM = 7;
 
 // Comes from https://stackoverflow.com/a/14589519
-template<typename T> inline constexpr auto ToIntegral(const T &e) -> typename std::underlying_type_t<T>
+template<typename T> inline constexpr auto ToIntegral(const T &e)
 {
 	return static_cast<std::underlying_type_t<T>>(e);
 }