diff --git a/src/test/getarg_tests.cpp b/src/test/getarg_tests.cpp
index 43e3cea0d93..d3701159bf3 100644
--- a/src/test/getarg_tests.cpp
+++ b/src/test/getarg_tests.cpp
@@ -2,6 +2,7 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include <util/strencodings.h>
 #include <util/system.h>
 #include <test/test_bitcoin.h>