diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 0552ee4..5148c01 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -1363,6 +1363,8 @@
             ((param & D3DSP_REGTYPE_MASK2) >> D3DSP_REGTYPE_SHIFT2));
 }
 
+extern unsigned int shader_get_float_offset(const DWORD reg);
+
 inline static BOOL shader_is_pshader_version(DWORD token) {
     return 0xFFFF0000 == (token & 0xFFFF0000);
 }