diff --git a/src/asahi/layout/layout.h b/src/asahi/layout/layout.h
index 63f5e2b46ae..68763f41af8 100644
--- a/src/asahi/layout/layout.h
+++ b/src/asahi/layout/layout.h
@@ -257,6 +257,12 @@ ail_space_bits(unsigned x)
 
 #define MOD_POT(x, y) (x) & ((y) - 1)
 
+static inline uint32_t
+ail_get_blocksize_B(const struct ail_layout *layout)
+{
+   return util_format_get_blocksize(layout->format);
+}
+
 static inline unsigned
 ail_effective_width_sa(unsigned width_px, unsigned sample_count_sa)
 {
diff --git a/src/asahi/layout/tiling.cc b/src/asahi/layout/tiling.cc
index b840976c78b..f5572bbd7e3 100644
--- a/src/asahi/layout/tiling.cc
+++ b/src/asahi/layout/tiling.cc
@@ -163,7 +163,7 @@ ail_tile(void *_tiled, void *_linear, const struct ail_layout *tiled_layout,
 {
    unsigned width_px = u_minify(tiled_layout->width_px, level);
    unsigned height_px = u_minify(tiled_layout->height_px, level);
-   unsigned blocksize_B = util_format_get_blocksize(tiled_layout->format);
+   unsigned blocksize_B = ail_get_blocksize_B(tiled_layout);
 
    assert(level < tiled_layout->levels && "Mip level out of bounds");
    assert(ail_is_level_twiddled_uncompressed(tiled_layout, level) &&