2 files changed, 6 insertions, 0 deletions

diff --git a/src/core/loader/deconstructed_rom_directory.cpp b/src/core/loader/deconstructed_rom_directory.cpp
index 8b4ee970f..8696c28bd 100644
--- a/src/core/loader/deconstructed_rom_directory.cpp
+++ b/src/core/loader/deconstructed_rom_directory.cpp
@@ -119,6 +119,11 @@ ResultStatus AppLoader_DeconstructedRomDirectory::Load(
     }
     metadata.Print();
 
+    const FileSys::ProgramAddressSpaceType arch_bits{metadata.GetAddressSpaceType()};
+    if (arch_bits == FileSys::ProgramAddressSpaceType::Is32Bit) {
+        return ResultStatus::ErrorUnsupportedArch;
+    }
+
     // Load NSO modules
     VAddr next_load_addr{Memory::PROCESS_IMAGE_VADDR};
     for (const auto& module : {"rtld", "main", "subsdk0", "subsdk1", "subsdk2", "subsdk3",
diff --git a/src/core/loader/loader.h b/src/core/loader/loader.h
index dd44ee9a6..b1aabb1cb 100644
--- a/src/core/loader/loader.h
+++ b/src/core/loader/loader.h
@@ -72,6 +72,7 @@ enum class ResultStatus {
     ErrorAlreadyLoaded,
     ErrorMemoryAllocationFailed,
     ErrorEncrypted,
+    ErrorUnsupportedArch,
 };
 
 /// Interface for loading an application