diff --git a/src/ai/trolly/trolly.cpp b/src/ai/trolly/trolly.cpp
index c761d8a87f..4a9c51c3f6 100644
--- a/src/ai/trolly/trolly.cpp
+++ b/src/ai/trolly/trolly.cpp
@@ -33,7 +33,6 @@
 #include "../../engine_func.h"
 #include "../../engine_base.h"
 #include "../../gui.h"
-#include "../../depot_base.h"
 #include "../../vehicle_base.h"
 #include "../../vehicle_func.h"
 #include "../../date_func.h"
diff --git a/src/aircraft_cmd.cpp b/src/aircraft_cmd.cpp
index 8589df2955..e27088cd69 100644
--- a/src/aircraft_cmd.cpp
+++ b/src/aircraft_cmd.cpp
@@ -12,7 +12,6 @@
 #include "timetable.h"
 #include "depot_func.h"
 #include "news_func.h"
-#include "aircraft.h"
 #include "airport.h"
 #include "vehicle_gui.h"
 #include "newgrf_engine.h"
diff --git a/src/depot_gui.cpp b/src/depot_gui.cpp
index 6b1aa6d3a0..c6338cba73 100644
--- a/src/depot_gui.cpp
+++ b/src/depot_gui.cpp
@@ -23,7 +23,6 @@
 #include "vehicle_func.h"
 #include "company_func.h"
 #include "order_func.h"
-#include "depot_base.h"
 #include "tilehighlight_func.h"
 #include "window_gui.h"
 #include "vehiclelist.h"
diff --git a/src/misc_gui.cpp b/src/misc_gui.cpp
index b0dd24d00a..47e1bb35ec 100644
--- a/src/misc_gui.cpp
+++ b/src/misc_gui.cpp
@@ -45,7 +45,6 @@
 #include "rail_gui.h"
 #include "tilehighlight_func.h"
 #include "querystring_gui.h"
-#include "company_base.h"
 
 #include "table/sprites.h"
 #include "table/strings.h"
diff --git a/src/order_cmd.cpp b/src/order_cmd.cpp
index 63fbc4a3f1..dd010c3edf 100644
--- a/src/order_cmd.cpp
+++ b/src/order_cmd.cpp
@@ -8,7 +8,6 @@
 #include "order_base.h"
 #include "order_func.h"
 #include "airport.h"
-#include "order_base.h"
 #include "waypoint.h"
 #include "command_func.h"
 #include "company_func.h"
diff --git a/src/order_gui.cpp b/src/order_gui.cpp
index 4280ab9479..29ab472966 100644
--- a/src/order_gui.cpp
+++ b/src/order_gui.cpp
@@ -29,7 +29,6 @@
 #include "widgets/dropdown_func.h"
 #include "textbuf_gui.h"
 #include "string_func.h"
-#include "depot_base.h"
 #include "tilehighlight_func.h"
 #include "network/network.h"
 
diff --git a/src/signal_func.h b/src/signal_func.h
index ec4ce48d90..af2bf11876 100644
--- a/src/signal_func.h
+++ b/src/signal_func.h
@@ -8,7 +8,6 @@
 #include "track_type.h"
 #include "tile_type.h"
 #include "direction_type.h"
-#include "track_type.h"
 #include "company_type.h"
 
 /**
diff --git a/src/strings.cpp b/src/strings.cpp
index 5aa15fe0f7..c4daa67535 100644
--- a/src/strings.cpp
+++ b/src/strings.cpp
@@ -14,7 +14,6 @@
 #include "variables.h"
 #include "newgrf_text.h"
 #include "music.h"
-#include "industry.h"
 #include "fileio_func.h"
 #include "cargotype.h"
 #include "group.h"
diff --git a/src/tgp.cpp b/src/tgp.cpp
index 5cbe0a748a..18e4026d85 100644
--- a/src/tgp.cpp
+++ b/src/tgp.cpp
@@ -6,7 +6,6 @@
 #include <math.h>
 #include "openttd.h"
 #include "clear_map.h"
-#include "clear_map.h"
 #include "variables.h"
 #include "void_map.h"
 #include "tgp.h"
diff --git a/src/widgets/dropdown.cpp b/src/widgets/dropdown.cpp
index 23f87a2cf4..2b7c41d648 100644
--- a/src/widgets/dropdown.cpp
+++ b/src/widgets/dropdown.cpp
@@ -7,7 +7,6 @@
 #include "../strings_type.h"
 #include "../window_gui.h"
 #include "../strings_func.h"
-#include "../strings_type.h"
 #include "../gfx_func.h"
 #include "../window_func.h"
 #include "../core/math_func.hpp"