diff --git a/src/openrct2-ui/CursorRepository.h b/src/openrct2-ui/CursorRepository.h
index 400fa55f47..b25c90302e 100644
--- a/src/openrct2-ui/CursorRepository.h
+++ b/src/openrct2-ui/CursorRepository.h
@@ -14,6 +14,8 @@
 *****************************************************************************/
 #pragma endregion
 
+#pragma once
+
 #include <map>
 #include <functional>
 
diff --git a/src/openrct2-ui/TextComposition.h b/src/openrct2-ui/TextComposition.h
index 79850df23b..4c7785aa0b 100644
--- a/src/openrct2-ui/TextComposition.h
+++ b/src/openrct2-ui/TextComposition.h
@@ -14,6 +14,8 @@
 *****************************************************************************/
 #pragma endregion
 
+#pragma once
+
 #include <openrct2/common.h>
 #include <openrct2/Context.h>
 #include <openrct2/ui/UiContext.h>
diff --git a/src/openrct2-ui/interface/InGameConsole.h b/src/openrct2-ui/interface/InGameConsole.h
index 221e49d161..5e1da1a1be 100644
--- a/src/openrct2-ui/interface/InGameConsole.h
+++ b/src/openrct2-ui/interface/InGameConsole.h
@@ -1,3 +1,5 @@
+#pragma once
+
 #include <openrct2/interface/Console.h>
 
 namespace OpenRCT2::Ui
diff --git a/src/openrct2/localisation/LocalisationService.h b/src/openrct2/localisation/LocalisationService.h
index 91bb5ecdfd..f22c492a4c 100644
--- a/src/openrct2/localisation/LocalisationService.h
+++ b/src/openrct2/localisation/LocalisationService.h
@@ -14,6 +14,8 @@
 *****************************************************************************/
 #pragma endregion
 
+#pragma once
+
 #include <memory>
 #include <stack>
 #include <string>