diff --git a/src/core/sappyou.c b/src/core/sappyou.c
index 4e24eb8..397896c 100644
--- a/src/core/sappyou.c
+++ b/src/core/sappyou.c
@@ -33,6 +33,7 @@ int sappyou_free(Sappyou *sappyou) {
 }
 
 int sappyou_load(Sappyou *sappyou) {
+    sappyou->file = freopen(NULL, "rb", sappyou->file);
     if (sappyou->file == NULL) {
         return 1;
     }
@@ -66,6 +67,7 @@ int sappyou_load(Sappyou *sappyou) {
 }
 
 int sappyou_save(Sappyou *sappyou) {
+    sappyou->file = freopen(NULL, "wb", sappyou->file);
     if (sappyou->file == NULL) {
         return 1;
     }
@@ -94,7 +96,7 @@ int sappyou_save(Sappyou *sappyou) {
 }
 
 int sappyou_open(Sappyou *sappyou, const char *path) {
-    sappyou->file = fopen(path, "r+b");
+    sappyou->file = fopen(path, "rb");
     if (sappyou->file == NULL) {
         return 1;
     }
@@ -102,7 +104,7 @@ int sappyou_open(Sappyou *sappyou, const char *path) {
 }
 
 int sappyou_dump(Sappyou *sappyou, const char *path) {
-    sappyou->file = fopen(path, "w+b");
+    sappyou->file = fopen(path, "wb");
     if (sappyou->file == NULL) {
         return 1;
     }
diff --git a/src/core/sasahyou.c b/src/core/sasahyou.c
index 1172337..513c830 100644
--- a/src/core/sasahyou.c
+++ b/src/core/sasahyou.c
@@ -34,6 +34,7 @@ int sasahyou_free(Sasahyou *sasahyou) {
 }
 
 int sasahyou_load(Sasahyou *sasahyou) {
+    sasahyou->file = freopen(NULL, "rb", sasahyou->file);
     if (sasahyou->file == NULL) {
         return 1;
     }
@@ -65,6 +66,7 @@ int sasahyou_load(Sasahyou *sasahyou) {
 }
 
 int sasahyou_save(Sasahyou *sasahyou) {
+    sasahyou->file = freopen(NULL, "wb", sasahyou->file);
     if (sasahyou->file == NULL) {
         return 1;
     }
@@ -90,7 +92,7 @@ int sasahyou_save(Sasahyou *sasahyou) {
 }
 
 int sasahyou_open(Sasahyou *sasahyou, const char *path) {
-    sasahyou->file = fopen(path, "r+b");
+    sasahyou->file = fopen(path, "rb");
     if (sasahyou->file == NULL) {
         return 1;
     }
@@ -98,7 +100,7 @@ int sasahyou_open(Sasahyou *sasahyou, const char *path) {
 }
 
 int sasahyou_dump(Sasahyou *sasahyou, const char *path) {
-    sasahyou->file = fopen(path, "w+b");
+    sasahyou->file = fopen(path, "wb");
     if (sasahyou->file == NULL) {
         return 1;
     }
diff --git a/src/core/shoppyou.c b/src/core/shoppyou.c
index c9de915..78d93ce 100644
--- a/src/core/shoppyou.c
+++ b/src/core/shoppyou.c
@@ -30,6 +30,7 @@ int shoppyou_free(Shoppyou *shoppyou) {
 }
 
 int shoppyou_load(Shoppyou *shoppyou) {
+    shoppyou->file = freopen(NULL, "rb", shoppyou->file);
     if (shoppyou->file == NULL) {
         return 1;
     }
@@ -54,6 +55,7 @@ int shoppyou_load(Shoppyou *shoppyou) {
 }
 
 int shoppyou_save(Shoppyou *shoppyou) {
+    shoppyou->file = freopen(NULL, "wb", shoppyou->file);
     if (shoppyou->file == NULL) {
         return 1;
     }
@@ -76,7 +78,7 @@ int shoppyou_save(Shoppyou *shoppyou) {
 }
 
 int shoppyou_open(Shoppyou *shoppyou, const char *path) {
-    shoppyou->file = fopen(path, "r+b");
+    shoppyou->file = fopen(path, "rb");
     if (shoppyou->file == NULL) {
         return 1;
     }
@@ -85,7 +87,7 @@ int shoppyou_open(Shoppyou *shoppyou, const char *path) {
 }
 
 int shoppyou_dump(Shoppyou *shoppyou, const char *path) {
-    shoppyou->file = fopen(path, "w+b");
+    shoppyou->file = fopen(path, "wb");
     if (shoppyou->file == NULL) {
         return 1;
     }