diff --git a/Source/Core/DiscIO/WIABlob.cpp b/Source/Core/DiscIO/WIABlob.cpp
index b3c9553d49..d5a8086789 100644
--- a/Source/Core/DiscIO/WIABlob.cpp
+++ b/Source/Core/DiscIO/WIABlob.cpp
@@ -129,7 +129,8 @@ bool WIAFileReader::Initialize(const std::string& path)
 
   const u32 compression_type = Common::swap32(m_header_2.compression_type);
   m_compression_type = static_cast<WIACompressionType>(compression_type);
-  if (m_compression_type > (m_rvz ? WIACompressionType::Zstd : WIACompressionType::LZMA2))
+  if (m_compression_type > (m_rvz ? WIACompressionType::Zstd : WIACompressionType::LZMA2) ||
+      (m_rvz && m_compression_type == WIACompressionType::Purge))
   {
     ERROR_LOG(DISCIO, "Unsupported compression type %u in %s", compression_type, path.c_str());
     return false;
diff --git a/Source/Core/DolphinQt/ConvertDialog.cpp b/Source/Core/DolphinQt/ConvertDialog.cpp
index f739de801a..db801581a0 100644
--- a/Source/Core/DolphinQt/ConvertDialog.cpp
+++ b/Source/Core/DolphinQt/ConvertDialog.cpp
@@ -226,7 +226,8 @@ void ConvertDialog::OnFormatChanged()
     const QString slow = tr("%1 (slow)");
 
     AddToCompressionComboBox(tr("No Compression"), DiscIO::WIACompressionType::None);
-    AddToCompressionComboBox(QStringLiteral("Purge"), DiscIO::WIACompressionType::Purge);
+    if (format == DiscIO::BlobType::WIA)
+      AddToCompressionComboBox(QStringLiteral("Purge"), DiscIO::WIACompressionType::Purge);
     AddToCompressionComboBox(slow.arg(QStringLiteral("bzip2")), DiscIO::WIACompressionType::Bzip2);
     AddToCompressionComboBox(slow.arg(QStringLiteral("LZMA")), DiscIO::WIACompressionType::LZMA);
     AddToCompressionComboBox(slow.arg(QStringLiteral("LZMA2")), DiscIO::WIACompressionType::LZMA2);