diff --git a/src/test/mempool_tests.cpp b/src/test/mempool_tests.cpp
index 9f8d434213b241..f283468b77f24b 100644
--- a/src/test/mempool_tests.cpp
+++ b/src/test/mempool_tests.cpp
@@ -11,6 +11,7 @@
 #include <test/util/setup_common.h>
 
 #include <boost/test/unit_test.hpp>
+#include <cmath>
 #include <vector>
 
 BOOST_FIXTURE_TEST_SUITE(mempool_tests, TestingSetup)