diff --git a/programs/x509/crl_app.c b/programs/x509/crl_app.c
index e634cca..0639566 100644
--- a/programs/x509/crl_app.c
+++ b/programs/x509/crl_app.c
@@ -53,11 +53,8 @@
 
 #if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_RSA_C) ||  \
     !defined(POLARSSL_X509_CRL_PARSE_C) || !defined(POLARSSL_FS_IO)
-int main( int argc, char *argv[] )
+int main( void )
 {
-    ((void) argc);
-    ((void) argv);
-
     polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_RSA_C and/or "
            "POLARSSL_X509_CRL_PARSE_C and/or POLARSSL_FS_IO not defined.\n");
     return( 0 );