diff --git a/Source/Core/DiscIO/Volume.h b/Source/Core/DiscIO/Volume.h
index 01b6bdd3b5..6f80efc55d 100644
--- a/Source/Core/DiscIO/Volume.h
+++ b/Source/Core/DiscIO/Volume.h
@@ -90,7 +90,7 @@ public:
 	virtual std::map<ELanguage, std::string> GetDescriptions() const { return std::map<ELanguage, std::string>(); }
 	virtual std::string GetCompany() const { return std::string(); }
 	virtual std::vector<u32> GetBanner(int* width, int* height) const;
-	virtual u32 GetFSTSize() const = 0;
+	virtual u64 GetFSTSize() const = 0;
 	virtual std::string GetApploaderDate() const = 0;
 	// 0 is the first disc, 1 is the second disc
 	virtual u8 GetDiscNumber() const { return 0; }
diff --git a/Source/Core/DiscIO/VolumeDirectory.cpp b/Source/Core/DiscIO/VolumeDirectory.cpp
index 905403e14b..eadb198eeb 100644
--- a/Source/Core/DiscIO/VolumeDirectory.cpp
+++ b/Source/Core/DiscIO/VolumeDirectory.cpp
@@ -210,7 +210,7 @@ void CVolumeDirectory::SetName(const std::string& name)
 	m_diskHeader[length + 0x20] = 0;
 }
 
-u32 CVolumeDirectory::GetFSTSize() const
+u64 CVolumeDirectory::GetFSTSize() const
 {
 	return 0;
 }
diff --git a/Source/Core/DiscIO/VolumeDirectory.h b/Source/Core/DiscIO/VolumeDirectory.h
index 8053d209d2..4dc7fa1a9a 100644
--- a/Source/Core/DiscIO/VolumeDirectory.h
+++ b/Source/Core/DiscIO/VolumeDirectory.h
@@ -44,7 +44,7 @@ public:
 	std::map<IVolume::ELanguage, std::string> GetNames(bool prefer_long) const override;
 	void SetName(const std::string&);
 
-	u32 GetFSTSize() const override;
+	u64 GetFSTSize() const override;
 
 	std::string GetApploaderDate() const override;
 	EPlatform GetVolumeType() const override;
diff --git a/Source/Core/DiscIO/VolumeGC.cpp b/Source/Core/DiscIO/VolumeGC.cpp
index 0efd0c6bf4..e0d17f17ee 100644
--- a/Source/Core/DiscIO/VolumeGC.cpp
+++ b/Source/Core/DiscIO/VolumeGC.cpp
@@ -144,7 +144,7 @@ std::vector<u32> CVolumeGC::GetBanner(int* width, int* height) const
 	return image_buffer;
 }
 
-u32 CVolumeGC::GetFSTSize() const
+u64 CVolumeGC::GetFSTSize() const
 {
 	if (m_pReader == nullptr)
 		return 0;
diff --git a/Source/Core/DiscIO/VolumeGC.h b/Source/Core/DiscIO/VolumeGC.h
index 7a409657a2..37777d093d 100644
--- a/Source/Core/DiscIO/VolumeGC.h
+++ b/Source/Core/DiscIO/VolumeGC.h
@@ -33,7 +33,7 @@ public:
 	std::map<ELanguage, std::string> GetDescriptions() const override;
 	std::string GetCompany() const override;
 	std::vector<u32> GetBanner(int* width, int* height) const override;
-	u32 GetFSTSize() const override;
+	u64 GetFSTSize() const override;
 	std::string GetApploaderDate() const override;
 	u8 GetDiscNumber() const override;
 
diff --git a/Source/Core/DiscIO/VolumeWad.h b/Source/Core/DiscIO/VolumeWad.h
index eb38542fa6..8405b612e9 100644
--- a/Source/Core/DiscIO/VolumeWad.h
+++ b/Source/Core/DiscIO/VolumeWad.h
@@ -33,7 +33,7 @@ public:
 	u16 GetRevision() const override;
 	std::string GetInternalName() const override { return ""; }
 	std::map<IVolume::ELanguage, std::string> GetNames(bool prefer_long) const override;
-	u32 GetFSTSize() const override { return 0; }
+	u64 GetFSTSize() const override { return 0; }
 	std::string GetApploaderDate() const override { return ""; }
 
 	EPlatform GetVolumeType() const override;
diff --git a/Source/Core/DiscIO/VolumeWiiCrypted.cpp b/Source/Core/DiscIO/VolumeWiiCrypted.cpp
index a6ec5a6e33..96fe209d0d 100644
--- a/Source/Core/DiscIO/VolumeWiiCrypted.cpp
+++ b/Source/Core/DiscIO/VolumeWiiCrypted.cpp
@@ -208,7 +208,7 @@ std::map<IVolume::ELanguage, std::string> CVolumeWiiCrypted::GetNames(bool prefe
 	return ReadWiiNames(opening_bnr);
 }
 
-u32 CVolumeWiiCrypted::GetFSTSize() const
+u64 CVolumeWiiCrypted::GetFSTSize() const
 {
 	if (m_pReader == nullptr)
 		return 0;
@@ -218,7 +218,7 @@ u32 CVolumeWiiCrypted::GetFSTSize() const
 	if (!Read(0x428, 0x4, (u8*)&size, true))
 		return 0;
 
-	return Common::swap32(size);
+	return (u64)Common::swap32(size) << 2;
 }
 
 std::string CVolumeWiiCrypted::GetApploaderDate() const
diff --git a/Source/Core/DiscIO/VolumeWiiCrypted.h b/Source/Core/DiscIO/VolumeWiiCrypted.h
index 32813a7c62..87055f16e1 100644
--- a/Source/Core/DiscIO/VolumeWiiCrypted.h
+++ b/Source/Core/DiscIO/VolumeWiiCrypted.h
@@ -33,7 +33,7 @@ public:
 	u16 GetRevision() const override;
 	std::string GetInternalName() const override;
 	std::map<IVolume::ELanguage, std::string> GetNames(bool prefer_long) const override;
-	u32 GetFSTSize() const override;
+	u64 GetFSTSize() const override;
 	std::string GetApploaderDate() const override;
 	u8 GetDiscNumber() const override;
 
diff --git a/Source/Core/DolphinWX/ISOProperties.cpp b/Source/Core/DolphinWX/ISOProperties.cpp
index 8e249d60d7..3f98d301a6 100644
--- a/Source/Core/DolphinWX/ISOProperties.cpp
+++ b/Source/Core/DolphinWX/ISOProperties.cpp
@@ -183,9 +183,9 @@ CISOProperties::CISOProperties(const std::string& fileName, wxWindow* parent, wx
 
 	wxString temp = "0x" + StrToWxStr(OpenISO->GetMakerID());
 	m_MakerID->SetValue(temp);
-	m_Revision->SetValue(wxString::Format("%u", OpenISO->GetRevision()));
+	m_Revision->SetValue(StrToWxStr(std::to_string(OpenISO->GetRevision())));
 	m_Date->SetValue(StrToWxStr(OpenISO->GetApploaderDate()));
-	m_FST->SetValue(wxString::Format("%u", OpenISO->GetFSTSize()));
+	m_FST->SetValue(StrToWxStr(std::to_string(OpenISO->GetFSTSize())));
 
 	// Here we set all the info to be shown + we set the window title
 	bool wii = OpenISO->GetVolumeType() != DiscIO::IVolume::GAMECUBE_DISC;