diff --git a/src/gx/Buffer.cpp b/src/gx/Buffer.cpp
index 262a95a..2c04e3b 100644
--- a/src/gx/Buffer.cpp
+++ b/src/gx/Buffer.cpp
@@ -426,7 +426,7 @@ void GxPrimVertexPtr(uint32_t vertexCount, const C3Vector* pos, uint32_t posStri
     GxPrimVertexPtr(buf, bufFmt);
 }
 
-void GxPrimLockVertexPtrs(uint32_t vertexCount, const C3Vector* pos, uint32_t posStride, const C3Vector* normal, uint32_t normalStride, const CImVector* color, uint32_t colorStride, const unsigned char* bone, uint32_t boneStride, const C2Vector* tex0, uint32_t tex0Stride, const C2Vector* tex1, uint32_t tex1Stride) {
+void GxPrimLockVertexPtrs(uint32_t vertexCount, const C3Vector* pos, uint32_t posStride, const C3Vector* normal, uint32_t normalStride, const CImVector* color, uint32_t colorStride, const uint8_t* bone, uint32_t boneStride, const C2Vector* tex0, uint32_t tex0Stride, const C2Vector* tex1, uint32_t tex1Stride) {
     BLIZZARD_ASSERT(Buffer::s_lockVertexCount == 0);
     Buffer::s_lockVertexCount = vertexCount;
 
diff --git a/src/gx/Buffer.hpp b/src/gx/Buffer.hpp
index 2732ac2..529dfcd 100644
--- a/src/gx/Buffer.hpp
+++ b/src/gx/Buffer.hpp
@@ -43,7 +43,7 @@ void GxPrimVertexPtr(CGxBuf*, EGxVertexBufferFormat);
 
 void GxPrimVertexPtr(uint32_t vertexCount, const C3Vector* pos, uint32_t posStride, const C3Vector* normal, uint32_t normalStride, const CImVector* color, uint32_t colorStride, const C2Vector* tex0, uint32_t tex0Stride, const C2Vector* tex1, uint32_t tex1Stride);
 
-void GxPrimLockVertexPtrs(uint32_t vertexCount, const C3Vector* pos, uint32_t posStride, const C3Vector* normal, uint32_t normalStride, const CImVector* color, uint32_t colorStride, const unsigned char* bone, uint32_t boneStride, const C2Vector* tex0, uint32_t tex0Stride, const C2Vector* tex1, uint32_t tex1Stride);
+void GxPrimLockVertexPtrs(uint32_t vertexCount, const C3Vector* pos, uint32_t posStride, const C3Vector* normal, uint32_t normalStride, const CImVector* color, uint32_t colorStride, const uint8_t* bone, uint32_t boneStride, const C2Vector* tex0, uint32_t tex0Stride, const C2Vector* tex1, uint32_t tex1Stride);
 
 void GxPrimUnlockVertexPtrs();