diff --git a/library/camellia.c b/library/camellia.c
index 2fe0b77..97c9f20 100644
--- a/library/camellia.c
+++ b/library/camellia.c
@@ -562,7 +562,7 @@
     unsigned char temp[16];
 
     if( length % 16 )
-        return( MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA );
+        return( MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH );
 
     if( mode == MBEDTLS_CAMELLIA_DECRYPT )
     {