diff --git a/src/gallium/frontends/wgl/stw_ext_extensionsstring.c b/src/gallium/frontends/wgl/stw_ext_extensionsstring.c
index f0d29752e22..3d0e36c44dd 100644
--- a/src/gallium/frontends/wgl/stw_ext_extensionsstring.c
+++ b/src/gallium/frontends/wgl/stw_ext_extensionsstring.c
@@ -43,6 +43,7 @@ static const char *stw_extension_string =
    "WGL_ARB_multisample "
    "WGL_ARB_pbuffer "
    "WGL_ARB_pixel_format "
+   "WGL_ARB_pixel_format_float "
    "WGL_ARB_render_texture "
    "WGL_EXT_create_context_es_profile "
    "WGL_EXT_create_context_es2_profile "