diff --git a/hash/sha2.cpp b/hash/sha2.cpp
index 88385165..d1067702 100644
--- a/hash/sha2.cpp
+++ b/hash/sha2.cpp
@@ -156,7 +156,7 @@ uint64_t H_512[] = {
 };
 
 ///////////////////////////////////////////////////////////////////////////////
-SHA2::SHA2 ():
+SHA256::SHA256 ():
     m_total (0)
 {
     std::copy (std::begin (H_256), std::end (H_256), std::begin (H));
@@ -164,7 +164,7 @@ SHA2::SHA2 ():
 
 
 void
-SHA2::update (const uint8_t *data, size_t length) {
+SHA256::update (const uint8_t *data, size_t length) {
     while (length) {
         size_t buffered = m_total % sizeof (M);
         size_t chunk = std::min (sizeof (M) - buffered, length);
@@ -180,7 +180,7 @@ SHA2::update (const uint8_t *data, size_t length) {
 
 
 void
-SHA2::finish (void) {
+SHA256::finish (void) {
     // Append a single 1 bit followed by 0s.
     size_t buffered = m_total % sizeof (M);
     size_t used     = m_total * 8;
@@ -219,7 +219,7 @@ SHA2::finish (void) {
 
 
 void
-SHA2::process (void) {
+SHA256::process (void) {
     CHECK_EQ (m_total % sizeof (M), 0);
 
     // Initialise the message schedule, W
@@ -264,8 +264,8 @@ SHA2::process (void) {
 }
 
 
-SHA2::digest_t
-SHA2::digest (void) const {
+SHA256::digest_t
+SHA256::digest (void) const {
     digest_t out;
     
     auto cursor = out.begin ();
diff --git a/hash/sha2.hpp b/hash/sha2.hpp
index a0edb1c4..d5ce2327 100644
--- a/hash/sha2.hpp
+++ b/hash/sha2.hpp
@@ -16,12 +16,12 @@
 
 namespace util {
     namespace hash {
-        class SHA2 {
+        class SHA256 {
             public:
                 typedef std::array<uint8_t,32> digest_t;
 
             public:
-                SHA2();
+                SHA256();
 
                 void update (const uint8_t *, size_t);
                 void finish (void);
diff --git a/test/sha2.cpp b/test/sha2.cpp
index ff9518d3..8c94f56c 100644
--- a/test/sha2.cpp
+++ b/test/sha2.cpp
@@ -4,11 +4,11 @@
 
 #include <cstring>
 
-using util::hash::SHA2;
+using util::hash::SHA256;
 
 static const struct {
     const char     *input;
-    SHA2::digest_t  output;
+    SHA256::digest_t  output;
 } TESTS[] = {
     { "",
       { 0xE3, 0xB0, 0xC4, 0x42, 0x98, 0xFC, 0x1C, 0x14, 0x9A, 0xFB, 0xF4, 0xC8, 0x99, 0x6F, 0xB9, 0x24,
@@ -40,7 +40,7 @@ static const struct {
 int
 main (int, char **) {
     for (auto i: TESTS) {
-        SHA2 obj;
+        SHA256 obj;
         obj.update (reinterpret_cast<const uint8_t*> (i.input), strlen (i.input));
         obj.finish ();