diff --git a/library/blowfish.c b/library/blowfish.c
index baa3393..767d141 100644
--- a/library/blowfish.c
+++ b/library/blowfish.c
@@ -178,7 +178,7 @@
     unsigned int i, j, k;
     uint32_t data, datal, datar;
 
-    if( keybits < MBEDTLS_BLOWFISH_MIN_KEY || keybits > MBEDTLS_BLOWFISH_MAX_KEY ||
+    if( keybits < MBEDTLS_BLOWFISH_MIN_KEY_BITS || keybits > MBEDTLS_BLOWFISH_MAX_KEY_BITS ||
         ( keybits % 8 ) )
     {
         return( MBEDTLS_ERR_BLOWFISH_INVALID_KEY_LENGTH );