diff --git a/src/machine/machined-core.c b/src/machine/machined-core.c
index 52cb915c30..8bb91fec61 100644
--- a/src/machine/machined-core.c
+++ b/src/machine/machined-core.c
@@ -7,6 +7,7 @@
 #include "fileio.h"
 #include "iovec-util.h"
 #include "machined.h"
+#include "namespace-util.h"
 #include "process-util.h"
 #include "socket-util.h"
 #include "strv.h"
diff --git a/src/vmspawn/vmspawn.c b/src/vmspawn/vmspawn.c
index 00e040d963..845c06dea2 100644
--- a/src/vmspawn/vmspawn.c
+++ b/src/vmspawn/vmspawn.c
@@ -46,6 +46,7 @@
 #include "macro.h"
 #include "main-func.h"
 #include "mkdir.h"
+#include "namespace-util.h"
 #include "netif-util.h"
 #include "pager.h"
 #include "parse-argument.h"