diff --git a/source/arm9/crypto.c b/source/arm9/crypto.c
index 25ba6b4..24cce5d 100644
--- a/source/arm9/crypto.c
+++ b/source/arm9/crypto.c
@@ -135,13 +135,15 @@
 	REG_NDMA0_DST_ADDR = (u32)&REG_AESWRFIFO;
 	REG_NDMA0_WRITE_CNT = 4;
 	REG_NDMA0_BLOCK_CNT = NDMA_BLOCK_SYS_FREQ;
-	REG_NDMA0_CNT = NDMA_ENABLE | NDMA_REPEATING_MODE | NDMA_STARTUP_AES_IN | NDMA_SRC_UPDATE_INC | NDMA_DST_UPDATE_FIXED;
+	REG_NDMA0_CNT = NDMA_ENABLE | NDMA_REPEATING_MODE | NDMA_BLK_TRANS_WORD_COUNT(2) | NDMA_STARTUP_AES_IN |
+					NDMA_SRC_UPDATE_INC | NDMA_DST_UPDATE_FIXED;
 
 	REG_NDMA1_SRC_ADDR = (u32)&REG_AESRDFIFO;
 	REG_NDMA1_DST_ADDR = (u32)out;
 	REG_NDMA1_WRITE_CNT = 4;
 	REG_NDMA1_BLOCK_CNT = NDMA_BLOCK_SYS_FREQ;
-	REG_NDMA1_CNT = NDMA_ENABLE | NDMA_REPEATING_MODE | NDMA_STARTUP_AES_OUT | NDMA_SRC_UPDATE_FIXED | NDMA_DST_UPDATE_INC;
+	REG_NDMA1_CNT = NDMA_ENABLE | NDMA_REPEATING_MODE | NDMA_BLK_TRANS_WORD_COUNT(2) | NDMA_STARTUP_AES_OUT |
+					NDMA_SRC_UPDATE_FIXED | NDMA_DST_UPDATE_INC;
 
 	REG_IRQ_IE |= (u32)INTERRUPT_AES;