diff --git a/extern/vgsound_emu-modified/vgsound_emu/src/core/vox/vox.cpp b/extern/vgsound_emu-modified/vgsound_emu/src/core/vox/vox.cpp
index ef06c1511..0eb97ab00 100644
--- a/extern/vgsound_emu-modified/vgsound_emu/src/core/vox/vox.cpp
+++ b/extern/vgsound_emu-modified/vgsound_emu/src/core/vox/vox.cpp
@@ -16,7 +16,7 @@ void vox_core::vox_decoder_t::decoder_state_t::reset()
 }
 
 // copy from source
-void vox_core::vox_decoder_t::decoder_state_t::copy(decoder_state_t src)
+void vox_core::vox_decoder_t::decoder_state_t::copy_state(decoder_state_t src)
 {
 	m_index = src.index();
 	m_step	= src.step();
diff --git a/extern/vgsound_emu-modified/vgsound_emu/src/core/vox/vox.hpp b/extern/vgsound_emu-modified/vgsound_emu/src/core/vox/vox.hpp
index f3ae6d4c1..167d0fedd 100644
--- a/extern/vgsound_emu-modified/vgsound_emu/src/core/vox/vox.hpp
+++ b/extern/vgsound_emu-modified/vgsound_emu/src/core/vox/vox.hpp
@@ -42,14 +42,14 @@ class vox_core : public vgsound_emu_core
 
 						decoder_state_t &operator=(decoder_state_t src)
 						{
-							copy(src);
+							copy_state(src);
 							return *this;
 						}
 
 					private:
 						const bool m_wraparound = false;  // wraparound or clamp?
 
-						void copy(decoder_state_t src);
+						void copy_state(decoder_state_t src);
 
 						vox_core &m_vox;
 						s8 m_index = 0;