diff --git a/tests/trezor/trezor_tests.cpp b/tests/trezor/trezor_tests.cpp
index 56fb33357..c5a520d4b 100644
--- a/tests/trezor/trezor_tests.cpp
+++ b/tests/trezor/trezor_tests.cpp
@@ -40,6 +40,7 @@ using namespace cryptonote;
 #include <cmath>
 #include <boost/regex.hpp>
 #include <common/apply_permutation.h>
+#include <iomanip>
 #include "common/util.h"
 #include "common/command_line.h"
 #include "trezor_tests.h"
diff --git a/tests/unit_tests/epee_utils.cpp b/tests/unit_tests/epee_utils.cpp
index 64ed83694..3363eb4a1 100644
--- a/tests/unit_tests/epee_utils.cpp
+++ b/tests/unit_tests/epee_utils.cpp
@@ -34,6 +34,7 @@
 #include <boost/range/iterator_range.hpp>
 #include <cstdint>
 #include <gtest/gtest.h>
+#include <iomanip>
 #include <iterator>
 #include <string>
 #include <sstream>
diff --git a/tests/unit_tests/memwipe.cpp b/tests/unit_tests/memwipe.cpp
index 3b82677ee..9cea204cc 100644
--- a/tests/unit_tests/memwipe.cpp
+++ b/tests/unit_tests/memwipe.cpp
@@ -28,6 +28,7 @@
 
 #include "gtest/gtest.h"
 
+#include <iomanip>
 #include <stdint.h>
 #include "misc_log_ex.h"
 #include "memwipe.h"