diff --git a/src/plugins/simulator/fscommon/simulatorfscommon.h b/src/plugins/simulator/fscommon/simulatorfscommon.h
index f4a509d53..1e05c9973 100644
--- a/src/plugins/simulator/fscommon/simulatorfscommon.h
+++ b/src/plugins/simulator/fscommon/simulatorfscommon.h
@@ -9,8 +9,8 @@
 
 //! \file
 
-#ifndef BLACKSIMPLUGIN_SIMULATOR_COMMON_H
-#define BLACKSIMPLUGIN_SIMULATOR_COMMON_H
+#ifndef BLACKSIMPLUGIN_FSCOMMON_SIMULATORFSCOMMON_H
+#define BLACKSIMPLUGIN_FSCOMMON_SIMULATORFSCOMMON_H
 
 #include "blackcore/simulatorcommon.h"
 #include "blackmisc/simulation/interpolator.h"