diff --git a/library/blowfish.c b/library/blowfish.c
index 5b6bb98..e42bd2b 100644
--- a/library/blowfish.c
+++ b/library/blowfish.c
@@ -176,7 +176,7 @@
     if( keybits < MBEDTLS_BLOWFISH_MIN_KEY_BITS || keybits > MBEDTLS_BLOWFISH_MAX_KEY_BITS ||
         ( keybits % 8 ) )
     {
-        return( MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH );
+        return( MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA );
     }
 
     keybits >>= 3;
@@ -265,7 +265,7 @@
     unsigned char temp[MBEDTLS_BLOWFISH_BLOCKSIZE];
 
     if( length % MBEDTLS_BLOWFISH_BLOCKSIZE )
-        return( MBEDTLS_ERR_BLOWFISH_INVALID_INPUT_LENGTH );
+        return( MBEDTLS_ERR_BLOWFISH_BAD_INPUT_DATA );
 
     if( mode == MBEDTLS_BLOWFISH_DECRYPT )
     {