diff --git a/src/xenia/gpu/command_processor.cc b/src/xenia/gpu/command_processor.cc
index a66057e5b..0122d4ed8 100644
--- a/src/xenia/gpu/command_processor.cc
+++ b/src/xenia/gpu/command_processor.cc
@@ -256,6 +256,9 @@ void CommandProcessor::InitializeRingBuffer(uint32_t ptr, uint32_t log2_size) {
   read_ptr_index_ = 0;
   primary_buffer_ptr_ = ptr;
   primary_buffer_size_ = 1 << log2_size;
+
+  std::memset(kernel_state_->memory()->TranslatePhysical(primary_buffer_ptr_),
+              0x00, primary_buffer_size_);
 }
 
 void CommandProcessor::EnableReadPointerWriteBack(uint32_t ptr,