diff --git a/include/mysql/service_my_crypt.h b/include/mysql/service_my_crypt.h
index ac8e427231d..1a4ebcfd067 100644
--- a/include/mysql/service_my_crypt.h
+++ b/include/mysql/service_my_crypt.h
@@ -45,7 +45,7 @@ extern "C" {
 /* The max key length of all supported algorithms */
 #define MY_AES_MAX_KEY_LENGTH 32
 
-#define MY_AES_CTX_SIZE 1024
+#define MY_AES_CTX_SIZE 1040
 
 enum my_aes_mode {
     MY_AES_ECB, MY_AES_CBC