diff --git a/dbsim/db_client_service.hpp b/dbsim/db_client_service.hpp
index 9a39a7e..4055b8b 100644
--- a/dbsim/db_client_service.hpp
+++ b/dbsim/db_client_service.hpp
@@ -33,7 +33,6 @@ namespace db
     public:
         client_service(db::client& client);
 
-        std::string query() const override { return ""; }
         bool interrupted(wsrep::unique_lock<wsrep::mutex>&)
             const override
         { return false; }
diff --git a/include/wsrep/client_service.hpp b/include/wsrep/client_service.hpp
index d81d3a7..b4d8abd 100644
--- a/include/wsrep/client_service.hpp
+++ b/include/wsrep/client_service.hpp
@@ -40,8 +40,6 @@ namespace wsrep
         client_service() { }
         virtual ~client_service() { }
 
-        virtual std::string query() const = 0;
-
         /**
          * Return true if the current transaction has been interrupted
          * by the DBMS. The lock which is passed to interrupted call
diff --git a/src/transaction.cpp b/src/transaction.cpp
index ca6fd06..25f2bc2 100644
--- a/src/transaction.cpp
+++ b/src/transaction.cpp
@@ -1781,7 +1781,6 @@ void wsrep::transaction::debug_log_state(
         << ", sr_rb: " << streaming_context_.rolled_back()
         << "\n    own: " << (client_state_.owning_thread_id_ == wsrep::this_thread::get_id())
         << " thread_id: " << client_state_.owning_thread_id_
-        << "\n query: " << client_service_.query()
         << "");
 }
 
diff --git a/test/mock_client_state.hpp b/test/mock_client_state.hpp
index 9610457..095b2b9 100644
--- a/test/mock_client_state.hpp
+++ b/test/mock_client_state.hpp
@@ -76,8 +76,6 @@ namespace wsrep
             , aborts_()
         { }
 
-        std::string query() const WSREP_OVERRIDE { return ""; }
-
         int bf_rollback() WSREP_OVERRIDE;
 
         bool interrupted(wsrep::unique_lock<wsrep::mutex>&)