diff --git a/lib/src/processor/memory/mmio/cgb/vram_dma.rs b/lib/src/processor/memory/mmio/cgb/vram_dma.rs
index c098261..7c9bcab 100644
--- a/lib/src/processor/memory/mmio/cgb/vram_dma.rs
+++ b/lib/src/processor/memory/mmio/cgb/vram_dma.rs
@@ -58,7 +58,7 @@ impl VramDma {
         match address.inner() {
             0xFF51 => self.source.set_high(data),
             0xFF52 => self.source.set_low(data & 0xF0),
-            0xFF53 => self.destination.set_high((data & 0b11111) | (0b1 << 7)),
+            0xFF53 => self.destination.set_high((data & 0x1F) | 0x80),
             0xFF54 => self.destination.set_low(data & 0xF0),
             0xFF55 => {
                 let num = data & !(0b1 << 7);
@@ -123,7 +123,7 @@ where
         };
         if let Some((source, dest, length)) = copy {
             for i in 0..length {
-                self.set(source + i, self.get(dest + i));
+                self.set(dest + i, self.get(source + i));
             }
         }
         if self.is_double_speed() {