diff --git a/include/bgfx/c99/bgfx.idl.h b/include/bgfx/c99/bgfx.idl.h
index ada2c67c0..3502668d5 100644
--- a/include/bgfx/c99/bgfx.idl.h
+++ b/include/bgfx/c99/bgfx.idl.h
@@ -213,10 +213,10 @@ BGFX_C_API bgfx_texture_handle_t bgfx_create_texture_3d(uint16_t _width, uint16_
 BGFX_C_API bgfx_texture_handle_t bgfx_create_texture_cube(uint16_t _size, bool _hasMips, uint16_t _numLayers, bgfx_texture_format_t _format, uint64_t _flags, const bgfx_memory_t * _mem);
 
 /**/
-BGFX_C_API void bgfx_update_texture_2d(bgfx_texture_handle_t _handle, uint16_t _layer, uint16_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t * _mem, uint16_t _pitch);
+BGFX_C_API void bgfx_update_texture_2d(bgfx_texture_handle_t _handle, uint16_t _layer, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t * _mem, uint16_t _pitch);
 
 /**/
-BGFX_C_API void bgfx_update_texture_3d(bgfx_texture_handle_t _handle, uint16_t _mip, uint16_t _x, uint16_t _y, uint16_t _z, uint16_t _width, uint16_t _height, uint16_t _depth, const bgfx_memory_t * _mem);
+BGFX_C_API void bgfx_update_texture_3d(bgfx_texture_handle_t _handle, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _z, uint16_t _width, uint16_t _height, uint16_t _depth, const bgfx_memory_t * _mem);
 
 /**/
 BGFX_C_API void bgfx_update_texture_cube(bgfx_texture_handle_t _handle, uint16_t _layer, uint8_t _side, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t * _mem, uint16_t _pitch);
@@ -619,8 +619,8 @@ typedef struct bgfx_interface_vtbl
 	bgfx_texture_handle_t (*create_texture_2d_scaled)(bgfx_backbuffer_ratio_t _ratio, bool _hasMips, uint16_t _numLayers, bgfx_texture_format_t _format, uint64_t _flags);
 	bgfx_texture_handle_t (*create_texture_3d)(uint16_t _width, uint16_t _height, uint16_t _depth, bool _hasMips, bgfx_texture_format_t _format, uint64_t _flags, const bgfx_memory_t * _mem);
 	bgfx_texture_handle_t (*create_texture_cube)(uint16_t _size, bool _hasMips, uint16_t _numLayers, bgfx_texture_format_t _format, uint64_t _flags, const bgfx_memory_t * _mem);
-	void (*update_texture_2d)(bgfx_texture_handle_t _handle, uint16_t _layer, uint16_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t * _mem, uint16_t _pitch);
-	void (*update_texture_3d)(bgfx_texture_handle_t _handle, uint16_t _mip, uint16_t _x, uint16_t _y, uint16_t _z, uint16_t _width, uint16_t _height, uint16_t _depth, const bgfx_memory_t * _mem);
+	void (*update_texture_2d)(bgfx_texture_handle_t _handle, uint16_t _layer, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t * _mem, uint16_t _pitch);
+	void (*update_texture_3d)(bgfx_texture_handle_t _handle, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _z, uint16_t _width, uint16_t _height, uint16_t _depth, const bgfx_memory_t * _mem);
 	void (*update_texture_cube)(bgfx_texture_handle_t _handle, uint16_t _layer, uint8_t _side, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t * _mem, uint16_t _pitch);
 	uint32_t (*read_texture)(bgfx_texture_handle_t _handle, void * _data, uint8_t _mip);
 	void (*set_texture_name)(bgfx_texture_handle_t _handle, const char * _name, int32_t _len);
diff --git a/scripts/bgfx.idl b/scripts/bgfx.idl
index de467c23f..5b1c789ac 100644
--- a/scripts/bgfx.idl
+++ b/scripts/bgfx.idl
@@ -484,7 +484,7 @@ func.updateTexture2D
 	"void"
 	.handle "TextureHandle"
 	.layer  "uint16_t"
-	.mip    "uint16_t"
+	.mip    "uint8_t"
 	.x      "uint16_t"
 	.y      "uint16_t"
 	.width  "uint16_t"
@@ -495,7 +495,7 @@ func.updateTexture2D
 func.updateTexture3D
 	"void"
 	.handle "TextureHandle"
-	.mip    "uint16_t"
+	.mip    "uint8_t"
 	.x      "uint16_t"
 	.y      "uint16_t"
 	.z      "uint16_t"
diff --git a/src/bgfx.idl.inl b/src/bgfx.idl.inl
index d9af17133..74cb1fc01 100644
--- a/src/bgfx.idl.inl
+++ b/src/bgfx.idl.inl
@@ -438,13 +438,13 @@ BGFX_C_API bgfx_texture_handle_t bgfx_create_texture_cube(uint16_t _size, bool _
 	return handle_ret.c;
 }
 
-BGFX_C_API void bgfx_update_texture_2d(bgfx_texture_handle_t _handle, uint16_t _layer, uint16_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t * _mem, uint16_t _pitch)
+BGFX_C_API void bgfx_update_texture_2d(bgfx_texture_handle_t _handle, uint16_t _layer, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _width, uint16_t _height, const bgfx_memory_t * _mem, uint16_t _pitch)
 {
 	union { bgfx_texture_handle_t c; bgfx::TextureHandle cpp; } handle = { _handle };
 	bgfx::updateTexture2D(handle.cpp, _layer, _mip, _x, _y, _width, _height, (const bgfx::Memory *)_mem, _pitch);
 }
 
-BGFX_C_API void bgfx_update_texture_3d(bgfx_texture_handle_t _handle, uint16_t _mip, uint16_t _x, uint16_t _y, uint16_t _z, uint16_t _width, uint16_t _height, uint16_t _depth, const bgfx_memory_t * _mem)
+BGFX_C_API void bgfx_update_texture_3d(bgfx_texture_handle_t _handle, uint8_t _mip, uint16_t _x, uint16_t _y, uint16_t _z, uint16_t _width, uint16_t _height, uint16_t _depth, const bgfx_memory_t * _mem)
 {
 	union { bgfx_texture_handle_t c; bgfx::TextureHandle cpp; } handle = { _handle };
 	bgfx::updateTexture3D(handle.cpp, _mip, _x, _y, _z, _width, _height, _depth, (const bgfx::Memory *)_mem);