diff --git a/src/zcbenchmarks.cpp b/src/zcbenchmarks.cpp
index ee9c4d9b876..b9f0cc68020 100644
--- a/src/zcbenchmarks.cpp
+++ b/src/zcbenchmarks.cpp
@@ -454,11 +454,9 @@ double benchmark_increment_sapling_note_witnesses(size_t nTxs)
 // This class is based on the class CCoinsViewDB, but with limited functionality.
 // The construtor and the functions `GetCoins` and `HaveCoins` come directly from
 // CCoinsViewDB, but the rest are either mocks and/or don't really do anything.
-
-// The following constant is a duplicate of the one found in txdb.cpp
-static const char DB_COINS = 'c';
-
 class FakeCoinsViewDB : public CCoinsView {
+    // The following constant is a duplicate of the one found in txdb.cpp
+    static const char DB_COINS = 'c';
 
     CDBWrapper db;