diff --git a/helpers/wayland_wrapper/kwin_wrapper.c b/helpers/wayland_wrapper/kwin_wrapper.c
index 3dc76934df..061e05c06a 100644
--- a/helpers/wayland_wrapper/kwin_wrapper.c
+++ b/helpers/wayland_wrapper/kwin_wrapper.c
@@ -24,6 +24,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/un.h>
 #include <sys/wait.h>
 #include <unistd.h>
diff --git a/helpers/wayland_wrapper/wl-socket.c b/helpers/wayland_wrapper/wl-socket.c
index 4ec6ac3fd2..4110e95290 100644
--- a/helpers/wayland_wrapper/wl-socket.c
+++ b/helpers/wayland_wrapper/wl-socket.c
@@ -12,6 +12,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/file.h>
 #include <sys/socket.h>
 #include <sys/stat.h>