diff --git a/core/embed/rust/src/ui/shape/cache/jpeg_cache.rs b/core/embed/rust/src/ui/shape/cache/jpeg_cache.rs
index c3ad3cccd5..76544b4e23 100644
--- a/core/embed/rust/src/ui/shape/cache/jpeg_cache.rs
+++ b/core/embed/rust/src/ui/shape/cache/jpeg_cache.rs
@@ -115,7 +115,10 @@ impl<'a> JpegCacheSlot<'a> {
     }
 
     fn is_for<'i: 'a>(&self, jpeg: &'i [u8], scale: u8) -> bool {
-        jpeg == self.jpeg && scale == self.scale && self.decoder.is_some()
+        jpeg.as_ptr() == self.jpeg.as_ptr()
+            && jpeg.len() == self.jpeg.len()
+            && scale == self.scale
+            && self.decoder.is_some()
     }
 
     pub fn get_size<'i: 'a>(&mut self, jpeg: &'i [u8], scale: u8) -> Result<Offset, tjpgd::Error> {
diff --git a/core/embed/rust/src/ui/shape/cache/zlib_cache.rs b/core/embed/rust/src/ui/shape/cache/zlib_cache.rs
index e992d74f27..a380393916 100644
--- a/core/embed/rust/src/ui/shape/cache/zlib_cache.rs
+++ b/core/embed/rust/src/ui/shape/cache/zlib_cache.rs
@@ -92,7 +92,9 @@ impl<'a> ZlibCacheSlot<'a> {
     }
 
     fn is_for(&self, zdata: &[u8], offset: usize) -> bool {
-        self.zdata == zdata && self.offset == offset
+        self.zdata.as_ptr() == zdata.as_ptr()
+            && self.zdata.len() == zdata.len()
+            && self.offset == offset
     }
 }