diff --git a/core/embed/rust/src/ui/shape/cache/blur_cache.rs b/core/embed/rust/src/ui/shape/cache/blur_cache.rs
index 2df6197cb6..098aad64dd 100644
--- a/core/embed/rust/src/ui/shape/cache/blur_cache.rs
+++ b/core/embed/rust/src/ui/shape/cache/blur_cache.rs
@@ -16,7 +16,10 @@ impl<'a> BlurCache<'a> {
     where
         T: LocalAllocLeakExt<'alloc>,
     {
-        let buff = bump.alloc_t()?.uninit.init(UnsafeCell::new([0; 7928])); // TODO !!! 7928
+        let buff = bump
+            .alloc_t()?
+            .uninit
+            .init(UnsafeCell::new([0; core::mem::size_of::<BlurBuff>()]));
 
         Some(Self {
             algo: None,
diff --git a/core/embed/rust/src/ui/shape/utils/blur.rs b/core/embed/rust/src/ui/shape/utils/blur.rs
index ede81e2973..0cadb9c43c 100644
--- a/core/embed/rust/src/ui/shape/utils/blur.rs
+++ b/core/embed/rust/src/ui/shape/utils/blur.rs
@@ -1,4 +1,4 @@
-use crate::ui::geometry::Offset;
+use crate::{trezorhal::display, ui::geometry::Offset};
 /// This is a simple and fast blurring algorithm that uses a box filter -
 /// a square kernel with all coefficients set to 1.
 ///
@@ -42,7 +42,7 @@ use core::mem::size_of;
 
 const MAX_RADIUS: usize = 4;
 const MAX_SIDE: usize = 1 + MAX_RADIUS * 2;
-const MAX_WIDTH: usize = 240;
+const MAX_WIDTH: usize = display::DISPLAY_RESX as usize;
 
 pub type BlurBuff = [u8; MAX_WIDTH * (MAX_SIDE * 3 + size_of::<u16>() * 3) + 8];