diff --git a/apps/opencs/view/world/tableheadermouseeventhandler.hpp b/apps/opencs/view/world/tableheadermouseeventhandler.hpp
index bef0b3389a..a5269747c7 100644
--- a/apps/opencs/view/world/tableheadermouseeventhandler.hpp
+++ b/apps/opencs/view/world/tableheadermouseeventhandler.hpp
@@ -1,4 +1,5 @@
-#pragma once
+#ifndef OPENMW_APPS_OPENCS_VIEW_WORLD_TABLEHEADERMOUSEEVENTHANDLER_HPP
+#define OPENMW_APPS_OPENCS_VIEW_WORLD_TABLEHEADERMOUSEEVENTHANDLER_HPP
 
 #include <QWidget>
 
@@ -28,3 +29,5 @@ namespace CSVWorld
 
     }; // class TableHeaderMouseEventHandler
 } // namespace CSVWorld
+
+#endif
diff --git a/components/misc/helpviewer.hpp b/components/misc/helpviewer.hpp
index 0e6dad9637..42a2965c0b 100644
--- a/components/misc/helpviewer.hpp
+++ b/components/misc/helpviewer.hpp
@@ -1,4 +1,5 @@
-#pragma once
+#ifndef OPENMW_COMPONENTS_MISC_HELPVIEWER_HPP
+#define OPENMW_COMPONENTS_MISC_HELPVIEWER_HPP
 
 namespace Misc
 {
@@ -7,3 +8,5 @@ namespace Misc
         void openHelp(const char* url);
     }
 }
+
+#endif