diff --git a/exosphere/src/se.c b/exosphere/src/se.c
index e7b7401b5..e279d3d21 100644
--- a/exosphere/src/se.c
+++ b/exosphere/src/se.c
@@ -540,8 +540,10 @@ void se_aes_ecb_encrypt_block(unsigned int keyslot, void *dst, size_t dst_size,
 
     /* Set configuration high (256-bit vs 128-bit) based on parameter. */
     SECURITY_ENGINE->CONFIG_REG = (ALG_AES_ENC | DST_MEMORY) | (config_high << 16);
-    SECURITY_ENGINE->CRYPTO_REG = keyslot << 24;
+    SECURITY_ENGINE->CRYPTO_REG = keyslot << 24 | 0x100;
+    flush_dcache_range((uint8_t *)src, (uint8_t *)src + 0x10);
     se_perform_aes_block_operation(dst, 0x10, src, 0x10);
+    flush_dcache_range((uint8_t *)dst, (uint8_t *)dst + 0x10);
 
 }
 
@@ -561,7 +563,9 @@ void se_aes_ecb_decrypt_block(unsigned int keyslot, void *dst, size_t dst_size,
 
     SECURITY_ENGINE->CONFIG_REG = (ALG_AES_DEC | DST_MEMORY);
     SECURITY_ENGINE->CRYPTO_REG = keyslot << 24;
+    flush_dcache_range((uint8_t *)src, (uint8_t *)src + 0x10);
     se_perform_aes_block_operation(dst, 0x10, src, 0x10);
+    flush_dcache_range((uint8_t *)dst, (uint8_t *)dst + 0x10);
 }
 
 void shift_left_xor_rb(uint8_t *key) {