diff --git a/src/internal/slibtool_driver_impl.h b/src/internal/slibtool_driver_impl.h
index ef67bb8..54a5f05 100644
--- a/src/internal/slibtool_driver_impl.h
+++ b/src/internal/slibtool_driver_impl.h
@@ -1,5 +1,5 @@
-#ifndef SOFORT_DRIVER_IMPL_H
-#define SOFORT_DRIVER_IMPL_H
+#ifndef SLIBTOOL_DRIVER_IMPL_H
+#define SLIBTOOL_DRIVER_IMPL_H
 
 #include <stdint.h>
 #include <stdio.h>