diff --git a/src/key.cpp b/src/key.cpp
index 2199996cf..ac05ed254 100644
--- a/src/key.cpp
+++ b/src/key.cpp
@@ -509,6 +509,16 @@ bool CPubKey::IsFullyValid() const {
     return true;
 }
 
+bool CPubKey::Compress() {
+    if (!IsValid())
+        return false;
+    CECKey key;
+    if (!key.SetPubKey(*this))
+        return false;
+    key.GetPubKey(*this, true);
+    return true;
+}
+
 bool CPubKey::Decompress() {
     if (!IsValid())
         return false;
diff --git a/src/key.h b/src/key.h
index 37a06810b..56a20e15f 100644
--- a/src/key.h
+++ b/src/key.h
@@ -163,6 +163,9 @@ public:
     // Recover a public key from a compact signature.
     bool RecoverCompact(const uint256 &hash, const std::vector<unsigned char>& vchSig);
 
+    // Turn this public key into a compressed public key.
+    bool Compress();
+
     // Turn this public key into an uncompressed public key.
     bool Decompress();