diff --git a/library/cipher_wrap.c b/library/cipher_wrap.c
index 6dd8c5d..54572ef 100644
--- a/library/cipher_wrap.c
+++ b/library/cipher_wrap.c
@@ -1987,7 +1987,7 @@
     if( key_bitlen != 256U )
         return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
 
-    if ( 0 != mbedtls_chachapoly_setkey( (mbedtls_chachapoly_context*)ctx, key ) )
+    if ( 0 != mbedtls_chachapoly_setkey( (mbedtls_chachapoly_context *)ctx, key ) )
         return( MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA );
 
     return( 0 );