diff --git a/src/engine/platform/sound/sm8521.h b/src/engine/platform/sound/sm8521.h
index e41b884e..a746618a 100644
--- a/src/engine/platform/sound/sm8521.h
+++ b/src/engine/platform/sound/sm8521.h
@@ -89,4 +89,4 @@ void sm8521_write(struct sm8521_t *sm8521, const unsigned char a, const unsigned
 } // extern "C"
 #endif
 
-#endif // _SM8521_EMU_H
\ No newline at end of file
+#endif // _SM8521_EMU_H