diff --git a/src/Back.cpp b/src/Back.cpp
index 6470910e..5fd0e760 100644
--- a/src/Back.cpp
+++ b/src/Back.cpp
@@ -25,7 +25,7 @@ BOOL InitBack(const char *fName, int type)
 
 	// Get width and height
 	char path[MAX_PATH];
-	sprintf(path, "%s/%s.pbm", gDataPath, fName);
+	sprintf(path, "%s\\%s.pbm", gDataPath, fName);
 
 	FILE *fp = fopen(path, "rb");
 	if (fp == NULL)
diff --git a/src/Config.cpp b/src/Config.cpp
index cb185a35..9c30d537 100644
--- a/src/Config.cpp
+++ b/src/Config.cpp
@@ -17,7 +17,7 @@ BOOL LoadConfigData(CONFIG *conf)
 
 	// Get path
 	char path[MAX_PATH];
-	sprintf(path, "%s/%s", gModulePath, config_filename);
+	sprintf(path, "%s\\%s", gModulePath, config_filename);
 
 	// Open file
 	FILE *fp = fopen(path, "rb");
diff --git a/src/Ending.cpp b/src/Ending.cpp
index a1eaf3d7..4491ed24 100644
--- a/src/Ending.cpp
+++ b/src/Ending.cpp
@@ -190,7 +190,7 @@ BOOL StartCreditScript()
 
 	// Open file
 	char path[MAX_PATH];
-	sprintf(path, "%s/%s", gDataPath, credit_script);
+	sprintf(path, "%s\\%s", gDataPath, credit_script);
 
 	Credit.size = GetFileSizeLong(path);
 	if (Credit.size == -1)
diff --git a/src/Game.cpp b/src/Game.cpp
index 771664ff..d28f21c8 100644
--- a/src/Game.cpp
+++ b/src/Game.cpp
@@ -689,7 +689,7 @@ BOOL Game(HWND hWnd)
 	PlaySoundObject(7, -1);
 
 	char path[MAX_PATH];
-	sprintf(path, "%s/npc.tbl", gDataPath);
+	sprintf(path, "%s\\npc.tbl", gDataPath);
 
 	if (!LoadNpcTable(path))
 	{
diff --git a/src/GenericLoad.cpp b/src/GenericLoad.cpp
index eb22e3e6..07bdab33 100644
--- a/src/GenericLoad.cpp
+++ b/src/GenericLoad.cpp
@@ -174,9 +174,9 @@ BOOL LoadGenericData()
 		bError = TRUE;
 	if (!MakeSurface_File("StageImage", SURFACE_ID_STAGE_ITEM))
 		bError = TRUE;
-	if (!MakeSurface_File("Npc/NpcSym", SURFACE_ID_NPC_SYM))
+	if (!MakeSurface_File("Npc\\NpcSym", SURFACE_ID_NPC_SYM))
 		bError = TRUE;
-	if (!MakeSurface_File("Npc/NpcRegu", SURFACE_ID_NPC_REGU))
+	if (!MakeSurface_File("Npc\\NpcRegu", SURFACE_ID_NPC_REGU))
 		bError = TRUE;
 	if (!MakeSurface_File("TextBox", SURFACE_ID_TEXT_BOX))
 		bError = TRUE;
diff --git a/src/Map.cpp b/src/Map.cpp
index 028d9885..ebcf8394 100644
--- a/src/Map.cpp
+++ b/src/Map.cpp
@@ -30,7 +30,7 @@ BOOL LoadMapData2(const char *path_map)
 
 	// Get path
 	char path[MAX_PATH];
-	sprintf(path, "%s/%s", gDataPath, path_map);
+	sprintf(path, "%s\\%s", gDataPath, path_map);
 
 	// Open file
 	FILE *fp = fopen(path, "rb");
@@ -75,7 +75,7 @@ BOOL LoadAttributeData(const char *path_atrb)
 {
 	// Open file
 	char path[MAX_PATH];
-	sprintf(path, "%s/%s", gDataPath, path_atrb);
+	sprintf(path, "%s\\%s", gDataPath, path_atrb);
 
 	FILE *fp = fopen(path, "rb");
 	if (fp == NULL)
diff --git a/src/MycParam.cpp b/src/MycParam.cpp
index 73177fcd..13b882c5 100644
--- a/src/MycParam.cpp
+++ b/src/MycParam.cpp
@@ -443,7 +443,7 @@ BOOL SaveTimeCounter()
 
 	// Get last time
 	char path[MAX_PATH];
-	sprintf(path, "%s/290.rec", gModulePath);
+	sprintf(path, "%s\\290.rec", gModulePath);
 
 	FILE *fp = fopen(path, "rb");
 	if (fp)
@@ -492,7 +492,7 @@ int LoadTimeCounter()
 
 	// Open file
 	char path[MAX_PATH];
-	sprintf(path, "%s/290.rec", gModulePath);
+	sprintf(path, "%s\\290.rec", gModulePath);
 
 	FILE *fp = fopen(path, "rb");
 	if (!fp)
diff --git a/src/NpChar.cpp b/src/NpChar.cpp
index 536cd9f2..846dc54c 100644
--- a/src/NpChar.cpp
+++ b/src/NpChar.cpp
@@ -59,7 +59,7 @@ BOOL LoadEvent(const char *path_event)
 	EVENT eve;
 
 	char path[MAX_PATH];
-	sprintf(path, "%s/%s", gDataPath, path_event);
+	sprintf(path, "%s\\%s", gDataPath, path_event);
 
 	fp = fopen(path, "rb");
 	if (fp == NULL)
diff --git a/src/Profile.cpp b/src/Profile.cpp
index c5d35591..1012067d 100644
--- a/src/Profile.cpp
+++ b/src/Profile.cpp
@@ -27,7 +27,7 @@ const char *gProfileCode = "Do041220";
 BOOL IsProfile()
 {
 	char path[MAX_PATH];
-	sprintf(path, "%s/%s", gModulePath, gDefaultName);
+	sprintf(path, "%s\\%s", gModulePath, gDefaultName);
 
 	FILE *fp = fopen(path, "rb");
 	if (fp == NULL)
@@ -46,9 +46,9 @@ BOOL SaveProfile(const char *name)
 
 	// Get path
 	if (name)
-		sprintf(path, "%s/%s", gModulePath, name);
+		sprintf(path, "%s\\%s", gModulePath, name);
 	else
-		sprintf(path, "%s/%s", gModulePath, gDefaultName);
+		sprintf(path, "%s\\%s", gModulePath, gDefaultName);
 
 	// Open file
 	fp = fopen(path, "wb");
@@ -93,7 +93,7 @@ BOOL LoadProfile(const char *name)
 	if (name)
 		sprintf(path, "%s", name);
 	else
-		sprintf(path, "%s/%s", gModulePath, gDefaultName);
+		sprintf(path, "%s\\%s", gModulePath, gDefaultName);
 
 	// Open file
 	PROFILE profile;
diff --git a/src/Stage.cpp b/src/Stage.cpp
index 1e68fe40..30f8dd76 100644
--- a/src/Stage.cpp
+++ b/src/Stage.cpp
@@ -139,26 +139,26 @@ BOOL TransferStage(int no, int w, int x, int y)
 
 	//Load tileset
 	char path[MAX_PATH];
-	sprintf(path, "%s/Prt%s", path_dir, gTMT[no].parts);
+	sprintf(path, "%s\\Prt%s", path_dir, gTMT[no].parts);
 	if (!ReloadBitmap_File(path, SURFACE_ID_LEVEL_TILESET))
 		bError = TRUE;
 
-	sprintf(path, "%s/%s.pxa", path_dir, gTMT[no].parts);
+	sprintf(path, "%s\\%s.pxa", path_dir, gTMT[no].parts);
 	if (!LoadAttributeData(path))
 		bError = TRUE;
 
 	//Load tilemap
-	sprintf(path, "%s/%s.pxm", path_dir, gTMT[no].map);
+	sprintf(path, "%s\\%s.pxm", path_dir, gTMT[no].map);
 	if (!LoadMapData2(path))
 		bError = TRUE;
 
 	//Load NPCs
-	sprintf(path, "%s/%s.pxe", path_dir, gTMT[no].map);
+	sprintf(path, "%s\\%s.pxe", path_dir, gTMT[no].map);
 	if (!LoadEvent(path))
 		bError = TRUE;
 
 	//Load script
-	sprintf(path, "%s/%s.tsc", path_dir, gTMT[no].map);
+	sprintf(path, "%s\\%s.tsc", path_dir, gTMT[no].map);
 	if (!LoadTextScript_Stage(path))
 		bError = TRUE;
 
@@ -171,11 +171,11 @@ BOOL TransferStage(int no, int w, int x, int y)
 	strcpy(path_dir, "Npc");
 
 	//Load NPC sprite sheets
-	sprintf(path, "%s/Npc%s", path_dir, gTMT[no].npc);
+	sprintf(path, "%s\\Npc%s", path_dir, gTMT[no].npc);
 	if (!ReloadBitmap_File(path, SURFACE_ID_LEVEL_SPRITESET_1))
 		bError = TRUE;
 
-	sprintf(path, "%s/Npc%s", path_dir, gTMT[no].boss);
+	sprintf(path, "%s\\Npc%s", path_dir, gTMT[no].boss);
 	if (!ReloadBitmap_File(path, SURFACE_ID_LEVEL_SPRITESET_2))
 		bError = TRUE;
 
diff --git a/src/TextScr.cpp b/src/TextScr.cpp
index b8933e49..6675c8df 100644
--- a/src/TextScr.cpp
+++ b/src/TextScr.cpp
@@ -116,7 +116,7 @@ BOOL LoadTextScript2(const char *name)
 {
 	//Get path
 	char path[260];
-	sprintf(path, "%s/%s", gDataPath, name);
+	sprintf(path, "%s\\%s", gDataPath, name);
 
 	gTS.size = GetFileSizeLong(path);
 	if (gTS.size == -1)
@@ -145,7 +145,7 @@ BOOL LoadTextScript_Stage(const char *name)
 {
 	//Open Head.tsc
 	char path[MAX_PATH];
-	sprintf(path, "%s/%s", gDataPath, "Head.tsc");
+	sprintf(path, "%s\\%s", gDataPath, "Head.tsc");
 
 	long head_size = GetFileSizeLong(path);
 	if (head_size == -1)
@@ -162,7 +162,7 @@ BOOL LoadTextScript_Stage(const char *name)
 	fclose(fp);
 
 	//Open stage's .tsc
-	sprintf(path, "%s/%s", gDataPath, name);
+	sprintf(path, "%s\\%s", gDataPath, name);
 
 	long body_size = GetFileSizeLong(path);
 	if (body_size == -1)