diff --git a/platform/default/string_stdlib.cpp b/platform/default/string_stdlib.cpp
index d2c02e288..a506c761e 100644
--- a/platform/default/string_stdlib.cpp
+++ b/platform/default/string_stdlib.cpp
@@ -4,6 +4,7 @@
 #define NU_WITH_TOLOWER
 #define NU_WITH_UTF8_WRITER
 #include <libnu/libnu.h>
+#include <cstring>
 
 namespace mbgl {
 namespace platform {