diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index 3079a74d9..5a94534a8 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -36,8 +36,6 @@
 
 using namespace std;
 
-void ScriptPubKeyToJSON(const CScript& scriptPubKey, UniValue& out, bool fIncludeHex);
-
 /**
  * Return average network hashes per second based on the last 'lookup' blocks,
  * or over the difficulty averaging window if 'lookup' is nonpositive.