diff --git a/agb/src/dma.rs b/agb/src/dma.rs
index b1a3aac9..48e870db 100644
--- a/agb/src/dma.rs
+++ b/agb/src/dma.rs
@@ -70,14 +70,10 @@ impl Dma {
     /// drop the DmaTransferHandler return value until the next vblank interrupt to ensure that you
     /// a continuous effect.
     ///
-    /// # Safety
-    ///
-    /// While DmaTransferHandle is not dropped, the slice at `values` must not move in memory.
-    ///
     /// # Examples
     ///
     /// See the `dma_effect_*` examples in the repository to see some ways to use this.
-    pub unsafe fn hblank_transfer<T>(
+    pub fn hblank_transfer<T>(
         &self,
         location: &DmaControllable<T>,
         values: &[T],
@@ -93,10 +89,13 @@ impl Dma {
 
         let n_transfers = (size_of::<T>() / 2) as u32;
 
-        self.source_addr.set(handle.data.as_ptr().add(1) as u32);
+        self.source_addr.set(handle.data[1..].as_ptr() as u32);
         self.dest_addr.set(location.memory_location as u32);
 
-        location.memory_location.write_volatile(values[0]);
+        // SAFETY: by construction it is safe to write to location.memory_location
+        unsafe {
+            location.memory_location.write_volatile(values[0]);
+        }
 
         self.ctrl_addr.set(
             (0b10 << 0x15) | // keep destination address fixed