diff --git a/src/crypto/hash-extra-skein.c b/src/crypto/hash-extra-skein.c
index 6edbb0bca8..088ba99b3f 100644
--- a/src/crypto/hash-extra-skein.c
+++ b/src/crypto/hash-extra-skein.c
@@ -10,6 +10,5 @@
 #include "skein.h"
 
 void hash_extra_skein(const void *data, size_t length, char *hash) {
-  int r = skein_hash(8 * HASH_SIZE, data, 8 * length, (uint8_t*)hash);
-  assert(SKEIN_SUCCESS == r);
+  assert(SKEIN_SUCCESS == skein_hash(8 * HASH_SIZE, data, 8 * length, (uint8_t*)hash));
 }