diff --git a/src/glx/glxextensions.c b/src/glx/glxextensions.c
index bfa46a27f6b..6c1763f4dba 100644
--- a/src/glx/glxextensions.c
+++ b/src/glx/glxextensions.c
@@ -144,13 +144,13 @@ static const struct extension_info known_glx_extensions[] = {
    { GLX(EXT_texture_from_pixmap),        Y, N, N, N },
    { GLX(EXT_visual_info),                Y, Y, N, N },
    { GLX(EXT_visual_rating),              Y, Y, N, N },
-   { GLX(ATI_pixel_format_float),         N, N, N, N },
+   { GLX(ATI_pixel_format_float),         Y, N, N, N },
    { GLX(INTEL_swap_event),               Y, N, N, N },
    { GLX(MESA_copy_sub_buffer),           Y, N, N, N },
    { GLX(MESA_multithread_makecurrent),   Y, N, N, Y },
    { GLX(MESA_query_renderer),            Y, N, N, Y },
    { GLX(MESA_swap_control),              Y, N, N, Y },
-   { GLX(NV_float_buffer),                N, N, N, N },
+   { GLX(NV_float_buffer),                Y, N, N, N },
    { GLX(OML_swap_method),                Y, Y, N, N },
    { GLX(OML_sync_control),               Y, N, N, Y },
    { GLX(SGIS_multisample),               Y, Y, N, N },