diff --git a/src/basic/socket-util.h b/src/basic/socket-util.h
index 6920fd99ba..36ec422f2c 100644
--- a/src/basic/socket-util.h
+++ b/src/basic/socket-util.h
@@ -9,6 +9,7 @@
 #include <netinet/in.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <string.h>
 #include <sys/socket.h>
 #include <sys/types.h>
 #include <sys/un.h>