diff --git a/programs/pkey/pk_decrypt.c b/programs/pkey/pk_decrypt.c
index f2f8e59..c53e7ef 100644
--- a/programs/pkey/pk_decrypt.c
+++ b/programs/pkey/pk_decrypt.c
@@ -49,11 +49,8 @@
 #if !defined(POLARSSL_BIGNUM_C) || !defined(POLARSSL_PK_PARSE_C) ||  \
     !defined(POLARSSL_FS_IO) || !defined(POLARSSL_ENTROPY_C) || \
     !defined(POLARSSL_CTR_DRBG_C)
-int main( int argc, char *argv[] )
+int main( void )
 {
-    ((void) argc);
-    ((void) argv);
-
     polarssl_printf("POLARSSL_BIGNUM_C and/or POLARSSL_PK_PARSE_C and/or "
            "POLARSSL_FS_IO and/or POLARSSL_ENTROPY_C and/or "
            "POLARSSL_CTR_DRBG_C not defined.\n");