diff --git a/src/Back.cpp b/src/Back.cpp
index e011f111..4167bab3 100644
--- a/src/Back.cpp
+++ b/src/Back.cpp
@@ -9,11 +9,7 @@
 #include "CommonDefines.h"
 #include "Draw.h"
 #include "File.h"
-#include "Frame.h"
-#include "Game.h"
 #include "Main.h"
-#include "Map.h"
-#include "Stage.h"
 
 BACK gBack;
 int gWaterY;
diff --git a/src/Draw.cpp b/src/Draw.cpp
index 6dfd6899..c7e0d5d9 100644
--- a/src/Draw.cpp
+++ b/src/Draw.cpp
@@ -2,7 +2,6 @@
 
 #include <stddef.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 #include <string>
 
diff --git a/src/NpChar.h b/src/NpChar.h
index 0f2f9583..542619ee 100644
--- a/src/NpChar.h
+++ b/src/NpChar.h
@@ -1,6 +1,5 @@
 #pragma once
 
-#include "CommonDefines.h"
 #include "WindowsWrapper.h"
 
 #include "Draw.h"
diff --git a/src/Organya.cpp b/src/Organya.cpp
index 00fd7d73..a22aa380 100644
--- a/src/Organya.cpp
+++ b/src/Organya.cpp
@@ -7,7 +7,6 @@
 #include "Organya.h"
 
 #include <stddef.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
diff --git a/src/Sound.cpp b/src/Sound.cpp
index 1c00aba6..36f8cb5e 100644
--- a/src/Sound.cpp
+++ b/src/Sound.cpp
@@ -12,7 +12,7 @@ equivalents.
 
 #include "Sound.h"
 
-#include <math.h>
+#include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/src/Sound.h b/src/Sound.h
index 14aaab31..6e52c26e 100644
--- a/src/Sound.h
+++ b/src/Sound.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#include <stddef.h>
-
 #include "WindowsWrapper.h"
 
 #include "Backends/Audio.h"