diff --git a/src/ai/ai.hpp.sq b/src/ai/ai.hpp.sq
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/ai/ai_config.hpp.sq b/src/ai/ai_config.hpp.sq
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/ai/ai_gui.hpp.sq b/src/ai/ai_gui.hpp.sq
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/ai/ai_info.hpp.sq b/src/ai/ai_info.hpp.sq
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/ai/ai_instance.hpp.sq b/src/ai/ai_instance.hpp.sq
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/ai/ai_scanner.hpp.sq b/src/ai/ai_scanner.hpp.sq
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/ai/ai_storage.hpp.sq b/src/ai/ai_storage.hpp.sq
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/src/ai/api/ai_vehicle.hpp b/src/ai/api/ai_vehicle.hpp
index 9477e879e3..7bd9120d10 100644
--- a/src/ai/api/ai_vehicle.hpp
+++ b/src/ai/api/ai_vehicle.hpp
@@ -63,7 +63,7 @@ public:
 		ERR_VEHICLE_IN_FLIGHT,                  // [STR_ERROR_AIRCRAFT_IS_IN_FLIGHT]
 
 		/** Vehicle is without power */
-		ERR_VEHICLE_NO_POWER,                   // [STR_ERROR_TRAIN_START_NO_CATENARY]
+		ERR_VEHICLE_NO_POWER,                   // [STR_ERROR_TRAIN_START_NO_POWER]
 
 	};