diff --git a/include/mbedtls/camellia.h b/include/mbedtls/camellia.h
index d1a2a1c..b9903f6 100644
--- a/include/mbedtls/camellia.h
+++ b/include/mbedtls/camellia.h
@@ -45,6 +45,9 @@
 
 #define MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH -0x0026 /**< Invalid data input length. */
 
+/** TEMPORARY -- THIS IS IN CONFLICT WITH EXISTING ERROR CODES AND NEEDS CHANGE. */
+#define MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA       -0x0024  /**< Invalid data input length. */
+
 /* MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED is deprecated and should not be used.
  */
 #define MBEDTLS_ERR_CAMELLIA_HW_ACCEL_FAILED              -0x0027  /**< Camellia hardware accelerator failed. */