diff --git a/wgpu-core/src/resource.rs b/wgpu-core/src/resource.rs
index d8fae8f370..f58ff8d793 100644
--- a/wgpu-core/src/resource.rs
+++ b/wgpu-core/src/resource.rs
@@ -2327,7 +2327,7 @@ impl Blas {
                             // Clippy complains about this because it might not be intended, but
                             // this is intentional.
                             #[expect(clippy::single_range_in_vec_init)]
-                            self.device.raw().flush_mapped_ranges(
+                            self.device.raw().invalidate_mapped_ranges(
                                 compaction_buffer,
                                 &[0..size_of::<wgpu_types::BufferAddress>() as wgt::BufferAddress],
                             );