1 files changed, 2 insertions, 2 deletions
diff --git a/src/sys/core.h b/src/sys/core.h
index 517b090..d720e17 100644
--- a/src/sys/core.h
+++ b/src/sys/core.h
@@ -1,5 +1,5 @@
-#ifndef CORE_H
-#define CORE_H
+#ifndef SYS_CORE_H
+#define SYS_CORE_H
 
 extern unsigned long cntfrq;