diff --git a/src/generic/mako.cpp b/src/generic/mako.cpp
index 00e2904..591368e 100644
--- a/src/generic/mako.cpp
+++ b/src/generic/mako.cpp
@@ -11,7 +11,7 @@
 #include "mako.h"
 #include "mako_midi.h"
 #include "fm/mako_ymfm.h"
-#include "../config.h"
+#include "config.h"
 #include "dri.h"
 
 namespace {
diff --git a/src/sdlmain.cpp b/src/sdlmain.cpp
index 9dca131..0da0240 100644
--- a/src/sdlmain.cpp
+++ b/src/sdlmain.cpp
@@ -3,7 +3,7 @@
 #include "config.h"
 #include "fileio.h"
 #include "texthook.h"
-#include "sys/nact.h"
+#include "nact.h"
 #include "debugger/debugger.h"
 #ifdef _WIN32
 #include <direct.h>
diff --git a/src/sys/ags.cpp b/src/sys/ags.cpp
index 753a7bd..483a2e3 100644
--- a/src/sys/ags.cpp
+++ b/src/sys/ags.cpp
@@ -8,8 +8,8 @@
 #include <string.h>
 #include "nact.h"
 #include "game_id.h"
-#include "../config.h"
-#include "../fileio.h"
+#include "config.h"
+#include "fileio.h"
 
 extern SDL_Window* g_window;
 extern SDL_Renderer* g_renderer;
diff --git a/src/sys/ags.h b/src/sys/ags.h
index cb62472..5fa1905 100644
--- a/src/sys/ags.h
+++ b/src/sys/ags.h
@@ -11,7 +11,7 @@
 #include <vector>
 #include <memory>
 #include <stdio.h>
-#include "../common.h"
+#include "common.h"
 #include "game_id.h"
 #include "dri.h"
 #include <SDL_ttf.h>
diff --git a/src/sys/ags_bmp.cpp b/src/sys/ags_bmp.cpp
index bd717bf..1900313 100644
--- a/src/sys/ags_bmp.cpp
+++ b/src/sys/ags_bmp.cpp
@@ -5,7 +5,7 @@
 */
 
 #include "ags.h"
-#include "../fileio.h"
+#include "fileio.h"
 
 void AGS::load_bmp(const char* file_name)
 {
diff --git a/src/sys/dri.cpp b/src/sys/dri.cpp
index 0fd2c67..e62cb0a 100644
--- a/src/sys/dri.cpp
+++ b/src/sys/dri.cpp
@@ -8,7 +8,7 @@
 #include <memory>
 #include <string.h>
 #include "game_id.h"
-#include "../fileio.h"
+#include "fileio.h"
 
 void Dri::open(const char* file_name)
 {
diff --git a/src/sys/game_id.cpp b/src/sys/game_id.cpp
index 557c3ef..1cf3602 100644
--- a/src/sys/game_id.cpp
+++ b/src/sys/game_id.cpp
@@ -1,6 +1,6 @@
 #include <string.h>
 #include "game_id.h"
-#include "../fileio.h"
+#include "fileio.h"
 #include "config.h"
 
 // ADISK.DATの先頭256bytes
diff --git a/src/sys/mako.h b/src/sys/mako.h
index 89f2223..d889843 100644
--- a/src/sys/mako.h
+++ b/src/sys/mako.h
@@ -12,7 +12,7 @@
 #include <stdio.h>
 #include <limits.h>
 #include <math.h>
-#include "../common.h"
+#include "common.h"
 #include "game_id.h"
 #include "dri.h"
 
diff --git a/src/sys/mako_midi.h b/src/sys/mako_midi.h
index f64ef19..ab68adc 100644
--- a/src/sys/mako_midi.h
+++ b/src/sys/mako_midi.h
@@ -4,7 +4,7 @@
 #include <memory>
 #include <queue>
 #include <SDL.h>
-#include "../common.h"
+#include "common.h"
 
 struct GameId;
 class Dri;
diff --git a/src/sys/nact.cpp b/src/sys/nact.cpp
index 65eac7f..51bddc5 100644
--- a/src/sys/nact.cpp
+++ b/src/sys/nact.cpp
@@ -15,8 +15,8 @@
 #include "msgskip.h"
 #include "texthook.h"
 #include "dri.h"
-#include "../config.h"
-#include "../fileio.h"
+#include "config.h"
+#include "fileio.h"
 #include "game_id.h"
 #include "debugger/debugger.h"
 
diff --git a/src/sys/nact.h b/src/sys/nact.h
index ff92bec..f460964 100644
--- a/src/sys/nact.h
+++ b/src/sys/nact.h
@@ -11,7 +11,7 @@
 #include <string>
 #include <vector>
 #include <stdio.h>
-#include "../common.h"
+#include "common.h"
 #include "config.h"
 #include "dri.h"
 #include "game_id.h"
diff --git a/src/sys/nact_sys1.cpp b/src/sys/nact_sys1.cpp
index 723e9c1..00c774a 100644
--- a/src/sys/nact_sys1.cpp
+++ b/src/sys/nact_sys1.cpp
@@ -17,7 +17,7 @@
 #include "mako.h"
 #include "msgskip.h"
 #include "game_id.h"
-#include "../fileio.h"
+#include "fileio.h"
 #include "encoding.h"
 #include "texthook.h"
 
diff --git a/src/sys/nact_sys2.cpp b/src/sys/nact_sys2.cpp
index 75430de..f0f25db 100644
--- a/src/sys/nact_sys2.cpp
+++ b/src/sys/nact_sys2.cpp
@@ -11,7 +11,7 @@
 #include "mako.h"
 #include "msgskip.h"
 #include "game_id.h"
-#include "../fileio.h"
+#include "fileio.h"
 #include "encoding.h"
 #include "texthook.h"
 
diff --git a/src/sys/nact_sys3.cpp b/src/sys/nact_sys3.cpp
index c5d8b60..b96f03b 100644
--- a/src/sys/nact_sys3.cpp
+++ b/src/sys/nact_sys3.cpp
@@ -11,7 +11,7 @@
 #include "mako.h"
 #include "msgskip.h"
 #include "game_id.h"
-#include "../fileio.h"
+#include "fileio.h"
 #include "encoding.h"
 #include "texthook.h"
 
diff --git a/src/win/mako.cpp b/src/win/mako.cpp
index 6d4633f..4c5a1ab 100644
--- a/src/win/mako.cpp
+++ b/src/win/mako.cpp
@@ -15,7 +15,7 @@
 #include "mako.h"
 #include "mako_midi.h"
 #include "fm/mako_ymfm.h"
-#include "../config.h"
+#include "config.h"
 #include "dri.h"
 #include "game_id.h"