diff --git a/src/libsodium/include/sodium/utils.h b/src/libsodium/include/sodium/utils.h
index e962d71d..aaf3fc5d 100644
--- a/src/libsodium/include/sodium/utils.h
+++ b/src/libsodium/include/sodium/utils.h
@@ -23,7 +23,7 @@ SODIUM_EXPORT
 void sodium_memzero(void * const pnt, const size_t len);
 
 SODIUM_EXPORT
-int sodium_memcmp(const void * const b1_, const void * const b2_, size_t size);
+int sodium_memcmp(const void * const b1_, const void * const b2_, size_t len);
 
 SODIUM_EXPORT
 char *sodium_bin2hex(char * const hex, const size_t hex_maxlen,
diff --git a/src/libsodium/sodium/utils.c b/src/libsodium/sodium/utils.c
index 27a0a9f8..75e74b08 100644
--- a/src/libsodium/sodium/utils.c
+++ b/src/libsodium/sodium/utils.c
@@ -36,14 +36,14 @@ sodium_memzero(void * const pnt, const size_t len)
 }
 
 int
-sodium_memcmp(const void * const b1_, const void * const b2_, size_t size)
+sodium_memcmp(const void * const b1_, const void * const b2_, size_t len)
 {
     const unsigned char *b1 = (const unsigned char *) b1_;
     const unsigned char *b2 = (const unsigned char *) b2_;
     size_t               i;
     unsigned char        d = (unsigned char) 0U;
 
-    for (i = 0U; i < size; i++) {
+    for (i = 0U; i < len; i++) {
         d |= b1[i] ^ b2[i];
     }
     return (int) ((1 & ((d - 1) >> 8)) - 1);