diff --git a/src/frontends/lean/frontend.cpp b/src/frontends/lean/frontend.cpp
index d9949658a..628fedb5f 100644
--- a/src/frontends/lean/frontend.cpp
+++ b/src/frontends/lean/frontend.cpp
@@ -20,6 +20,7 @@ Author: Leonardo de Moura
 #include "kernel/builtin.h"
 #include "kernel/io_state.h"
 #include "library/io_state_stream.h"
+#include "library/ite.h"
 #include "library/expr_pair.h"
 #include "library/expr_pair_maps.h"
 #include "library/arith/nat.h"
@@ -569,6 +570,7 @@ io_state init_frontend(environment const & env, bool no_kernel) {
 io_state init_test_frontend(environment const & env) {
     env->set_trusted_imported(true);
     io_state ios = init_frontend(env);
+    import_ite(env, ios);
     import_int(env, ios);
     import_real(env, ios);
     return ios;
diff --git a/src/library/kernel_bindings.cpp b/src/library/kernel_bindings.cpp
index 7307a434b..389ed7727 100644
--- a/src/library/kernel_bindings.cpp
+++ b/src/library/kernel_bindings.cpp
@@ -5,6 +5,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Author: Leonardo de Moura
 */
 #include <utility>
+#include <string>
 #include "util/sstream.h"
 #include "util/script_state.h"
 #include "kernel/expr.h"