1 files changed, 5 insertions, 2 deletions
diff --git a/src/checksum/adler32/adler32.h b/src/checksum/adler32/adler32.h
index 3a2441ad3..dc2872ca1 100644
--- a/src/checksum/adler32/adler32.h
+++ b/src/checksum/adler32/adler32.h
@@ -18,10 +18,13 @@ namespace Botan {
 class BOTAN_DLL Adler32 : public HashFunction
    {
    public:
-      void clear() { S1 = 1; S2 = 0; }
       std::string name() const { return "Adler32"; }
+      size_t output_length() const { return 4; }
       HashFunction* clone() const { return new Adler32; }
-      Adler32() : HashFunction(4) { clear(); }
+
+      void clear() { S1 = 1; S2 = 0; }
+
+      Adler32() { clear(); }
       ~Adler32() { clear(); }
    private:
       void add_data(const byte[], size_t);