1 files changed, 0 insertions, 2 deletions
diff --git a/core/os/os.h b/core/os/os.h
index 77391c3a8b..1d3619b1e6 100644
--- a/core/os/os.h
+++ b/core/os/os.h
@@ -41,8 +41,6 @@
 
 #include <stdarg.h>
 
-class Mutex;
-
 class OS {
 
 	static OS *singleton;