diff --git a/Source/Core/DiscIO/VolumeDisc.cpp b/Source/Core/DiscIO/VolumeDisc.cpp
index 2ec71b9fe1..e842540376 100644
--- a/Source/Core/DiscIO/VolumeDisc.cpp
+++ b/Source/Core/DiscIO/VolumeDisc.cpp
@@ -67,7 +67,7 @@ Country VolumeDisc::GetCountry(const Partition& partition) const
   {
     const BootID* boot_id = static_cast<const VolumeGC*>(this)->GetTriforceBootID();
 
-    switch (boot_id->region_flags)
+    switch (boot_id->region_flags & 0x000000FF)
     {
     default:
     case 0x02:  // JAPAN
diff --git a/Source/Core/DiscIO/VolumeGC.cpp b/Source/Core/DiscIO/VolumeGC.cpp
index 5d3d372dcf..acff07e292 100644
--- a/Source/Core/DiscIO/VolumeGC.cpp
+++ b/Source/Core/DiscIO/VolumeGC.cpp
@@ -92,7 +92,7 @@ Region VolumeGC::GetRegion() const
 {
   if (m_is_triforce)
   {
-    switch (m_triforce_header.region_flags)
+    switch (m_triforce_header.region_flags & 0x000000FF)
     {
     default:
     case 0x02:  // JAPAN