diff --git a/unittests/data/BackendInterfaceTests.cpp b/unittests/data/BackendInterfaceTests.cpp
index 4d0bf603..f30a0fe6 100644
--- a/unittests/data/BackendInterfaceTests.cpp
+++ b/unittests/data/BackendInterfaceTests.cpp
@@ -17,12 +17,14 @@
 */
 //==============================================================================
 
-#include "data/BackendInterface.hpp"
 #include "util/Fixtures.hpp"
+#include "util/MockPrometheus.hpp"
 #include "util/TestObject.hpp"
 
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
+#include <ripple/basics/XRPAmount.h>
+#include <ripple/protocol/Indexes.h>
 
 using namespace data;
 using namespace util::prometheus;
diff --git a/unittests/data/cassandra/BackendTests.cpp b/unittests/data/cassandra/BackendTests.cpp
index 11fe13b6..0182ce98 100644
--- a/unittests/data/cassandra/BackendTests.cpp
+++ b/unittests/data/cassandra/BackendTests.cpp
@@ -27,6 +27,7 @@
 #include "rpc/RPCHelpers.hpp"
 #include "util/Fixtures.hpp"
 #include "util/LedgerUtils.hpp"
+#include "util/MockPrometheus.hpp"
 #include "util/Random.hpp"
 #include "util/StringUtils.hpp"
 #include "util/TestGlobals.hpp"