diff --git a/source/gui/screen/ScriptScreen.cpp b/source/gui/screen/ScriptScreen.cpp
index d53995490..3e732eb0e 100644
--- a/source/gui/screen/ScriptScreen.cpp
+++ b/source/gui/screen/ScriptScreen.cpp
@@ -255,10 +255,9 @@ static std::pair<u8*, size_t> scriptRead(std::string path)
 {
     u8* data = nullptr;
     size_t size = 0;
-    std::ifstream in(path, std::ios::binary);
+    std::ifstream in(path, std::ios::binary | std::ios::ate);
     if (in.good())
     {
-        in.seekg(0, std::ios::end);
         size = in.tellg();
         in.seekg(0, std::ios::beg);
         data = new u8[size];
diff --git a/source/mysterygift.cpp b/source/mysterygift.cpp
index daef22d72..7ab1ed937 100644
--- a/source/mysterygift.cpp
+++ b/source/mysterygift.cpp
@@ -35,8 +35,7 @@ void MysteryGift::init(Generation g)
     sheet >> mysteryGiftSheet;
     sheet.close();
 
-    std::ifstream data(StringUtils::format("romfs:/mg/data%s.bin", genToString(g).c_str()), std::ios::binary);
-    data.seekg(0, std::ios::end);
+    std::ifstream data(StringUtils::format("romfs:/mg/data%s.bin", genToString(g).c_str()), std::ios::binary | std::ios::ate);
     size_t size = data.tellg();
     data.seekg(0, std::ios::beg);
 
diff --git a/source/sav/Bank.cpp b/source/sav/Bank.cpp
index f6ebb3b2d..c4f64a14b 100644
--- a/source/sav/Bank.cpp
+++ b/source/sav/Bank.cpp
@@ -36,9 +36,8 @@ Bank::Bank()
     if (io::exists("/3ds/PKSM/bank/bank.bin"))
     {
         bool deleteOld = true;
-        std::ifstream in("/3ds/PKSM/bank/bank.bin");
+        std::ifstream in("/3ds/PKSM/bank/bank.bin", std::ios::binary | std::ios::ate);
         Gui::waitFrame(i18n::localize("BANK_CONVERT"));
-        in.seekg(0, std::ios::end);
         size_t oldSize = in.tellg();
         in.seekg(0, std::ios::beg);
         u8* oldData = new u8[oldSize];
@@ -240,11 +239,10 @@ void Bank::loadExtData()
 void Bank::loadSD()
 {
     bool needResize = false, needSave = false;
-    std::fstream in("/3ds/PKSM/banks/pksm_1.bnk", std::ios::in);
+    std::fstream in("/3ds/PKSM/banks/pksm_1.bnk", std::ios::in | std::ios::binary | std::ios::ate);
     if (in.good())
     {
         Gui::waitFrame(i18n::localize("BANK_LOAD"));
-        in.seekg(0, std::ios::end);
         size = in.tellg();
         in.seekg(0, std::ios::beg);
         data = new u8[size];