diff --git a/stratosphere/fs_mitm/source/fsmitm_layeredrom.cpp b/stratosphere/fs_mitm/source/fsmitm_layeredrom.cpp
index 2b2bbeda3..f6a791870 100644
--- a/stratosphere/fs_mitm/source/fsmitm_layeredrom.cpp
+++ b/stratosphere/fs_mitm/source/fsmitm_layeredrom.cpp
@@ -46,6 +46,11 @@ LayeredRomFS::LayeredRomFS(std::shared_ptr<RomInterfaceStorage> s_r, std::shared
 
 
 Result LayeredRomFS::Read(void *buffer, size_t size, u64 offset)  {
+    /* Size zero reads should always succeed. */
+    if (size == 0) {
+        return 0;
+    }
+    
     /* Validate size. */
     u64 virt_size = (*this->p_source_infos)[this->p_source_infos->size() - 1].virtual_offset + (*this->p_source_infos)[this->p_source_infos->size() - 1].size;
     if (offset >= virt_size) {
diff --git a/stratosphere/libstratosphere/include/stratosphere/ipc/ipc_serialization.hpp b/stratosphere/libstratosphere/include/stratosphere/ipc/ipc_serialization.hpp
index 1e4e77afa..66225fe6e 100644
--- a/stratosphere/libstratosphere/include/stratosphere/ipc/ipc_serialization.hpp
+++ b/stratosphere/libstratosphere/include/stratosphere/ipc/ipc_serialization.hpp
@@ -306,9 +306,9 @@ struct Validator {
     static constexpr bool ValidateCommandArgument(IpcResponseContext *ctx, size_t& a_index, size_t& b_index, size_t& x_index, size_t& h_index, size_t& cur_c_size_offset, size_t& total_c_size) {
         constexpr ArgType argT = GetArgType<T>();
         if constexpr (argT == ArgType::InBuffer) {
-            return ctx->request.Buffers[a_index] != nullptr && ctx->request.BufferDirections[a_index] == BufferDirection_Send && ctx->request.BufferTypes[a_index++] == T::expected_type;
+            return (ctx->request.Buffers[a_index] != nullptr || ctx->request.BufferSizes[a_index] == 0) && ctx->request.BufferDirections[a_index] == BufferDirection_Send && ctx->request.BufferTypes[a_index++] == T::expected_type;
         } else if constexpr (argT == ArgType::OutBuffer) {
-            return ctx->request.Buffers[b_index] != nullptr && ctx->request.BufferDirections[b_index] == BufferDirection_Recv && ctx->request.BufferTypes[b_index++] == T::expected_type;
+            return (ctx->request.Buffers[b_index] != nullptr || ctx->request.BufferSizes[b_index] == 0) && ctx->request.BufferDirections[b_index] == BufferDirection_Recv && ctx->request.BufferTypes[b_index++] == T::expected_type;
         } else if constexpr (argT == ArgType::InPointer) {
             return ctx->request.Statics[x_index++] != nullptr;
         } else if constexpr (argT == ArgType::InHandle) {