diff --git a/core/src/km_core_action_api.cpp b/core/src/km_core_action_api.cpp
index 93da21ebdc..98ee0f11e7 100644
--- a/core/src/km_core_action_api.cpp
+++ b/core/src/km_core_action_api.cpp
@@ -9,7 +9,7 @@
 #include <cassert>
 #include <algorithm>
 #include <sstream>
-#include <string>
+#include <cstring>
 
 #include "keyman_core.h"