diff --git a/src/index/disktxpos.h b/src/index/disktxpos.h
new file mode 100644
--- /dev/null
+++ b/src/index/disktxpos.h
@@ -0,0 +1,32 @@
+// Copyright (c) 2019 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_INDEX_DISKTXPOS_H
+#define BITCOIN_INDEX_DISKTXPOS_H
+
+#include <chain.h>
+#include <flatfile.h>
+#include <primitives/block.h>
+#include <primitives/transaction.h>
+
+struct CDiskTxPos : public FlatFilePos {
+    unsigned int nTxOffset; // after header
+
+    SERIALIZE_METHODS(CDiskTxPos, obj) {
+        READWRITEAS(FlatFilePos, obj);
+        READWRITE(VARINT(obj.nTxOffset));
+    }
+
+    CDiskTxPos(const FlatFilePos &blockIn, unsigned int nTxOffsetIn)
+        : FlatFilePos(blockIn.nFile, blockIn.nPos), nTxOffset(nTxOffsetIn) {}
+
+    CDiskTxPos() { SetNull(); }
+
+    void SetNull() {
+        FlatFilePos::SetNull();
+        nTxOffset = 0;
+    }
+};
+
+#endif // BITCOIN_INDEX_DISKTXPOS_H
diff --git a/src/index/txindex.cpp b/src/index/txindex.cpp
--- a/src/index/txindex.cpp
+++ b/src/index/txindex.cpp
@@ -6,6 +6,7 @@
 
 #include <blockdb.h>
 #include <chain.h>
+#include <index/disktxpos.h>
 #include <node/ui_interface.h>
 #include <shutdown.h>
 #include <util/system.h>
@@ -18,25 +19,6 @@
 
 std::unique_ptr<TxIndex> g_txindex;
 
-struct CDiskTxPos : public FlatFilePos {
-    unsigned int nTxOffset; // after header
-
-    SERIALIZE_METHODS(CDiskTxPos, obj) {
-        READWRITEAS(FlatFilePos, obj);
-        READWRITE(VARINT(obj.nTxOffset));
-    }
-
-    CDiskTxPos(const FlatFilePos &blockIn, unsigned int nTxOffsetIn)
-        : FlatFilePos(blockIn.nFile, blockIn.nPos), nTxOffset(nTxOffsetIn) {}
-
-    CDiskTxPos() { SetNull(); }
-
-    void SetNull() {
-        FlatFilePos::SetNull();
-        nTxOffset = 0;
-    }
-};
-
 /**
  * Access to the txindex database (indexes/txindex/)
  *