diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
index 67b83ac9ca9..ebfa2e253b9 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
@@ -628,7 +628,7 @@ brw_emit_buffer_surface_state(struct brw_context *brw,
                               uint32_t *out_offset,
                               struct brw_bo *bo,
                               unsigned buffer_offset,
-                              unsigned surface_format,
+                              enum isl_format format,
                               unsigned buffer_size,
                               unsigned pitch,
                               unsigned reloc_flags)
@@ -646,7 +646,7 @@ brw_emit_buffer_surface_state(struct brw_context *brw,
                                                     bo, buffer_offset,
                                                     reloc_flags),
                          .size_B = buffer_size,
-                         .format = surface_format,
+                         .format = format,
                          .swizzle = ISL_SWIZZLE_IDENTITY,
                          .stride_B = pitch,
                          .mocs = brw_get_bo_mocs(devinfo, bo));