diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 8720ac6ca91..e0ceb29a26d 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -830,10 +830,16 @@ void st_init_extensions(struct pipe_screen *screen,
       { o(EXT_memory_object),                PIPE_CAP_MEMOBJ                           },
 #ifndef _WIN32
       { o(EXT_memory_object_fd),             PIPE_CAP_MEMOBJ                           },
+#else
+      { o(EXT_memory_object_win32),          PIPE_CAP_MEMOBJ                           },
 #endif
       { o(EXT_multisampled_render_to_texture), PIPE_CAP_SURFACE_SAMPLE_COUNT           },
       { o(EXT_semaphore),                    PIPE_CAP_FENCE_SIGNAL                     },
+#ifndef _WIN32
       { o(EXT_semaphore_fd),                 PIPE_CAP_FENCE_SIGNAL                     },
+#else
+      { o(EXT_semaphore_win32),              PIPE_CAP_FENCE_SIGNAL                     },
+#endif
       { o(EXT_shader_samples_identical),     PIPE_CAP_SHADER_SAMPLES_IDENTICAL         },
       { o(EXT_texture_array),                PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS         },
       { o(EXT_texture_filter_anisotropic),   PIPE_CAP_ANISOTROPIC_FILTER               },