diff --git a/src/test.c b/src/test.c
index ff6be18..5319c9e 100644
--- a/src/test.c
+++ b/src/test.c
@@ -118,7 +118,7 @@ static void image_copy(cammy_sram_frame *frame, uint8_t *buf) {
             uint32_t to   = (slot & 0x00030000) >> 16;
             uint8_t  value;
 
-            if (slot & (0x8000 >> (x & 0x03) >> (y & 0x03))) {
+            if (slot & (0x8000 >> (x & 0x03) >> ((y & 0x03) << 2))) {
                 value = to   ^ 0x03;
             } else {
                 value = from ^ 0x03;