diff --git a/libraries/liblutil/detach.c b/libraries/liblutil/detach.c
index cd9f0e0f3a..a398ed356a 100644
--- a/libraries/liblutil/detach.c
+++ b/libraries/liblutil/detach.c
@@ -14,6 +14,7 @@
 
 #include <stdio.h>
 
+#include <ac/stdlib.h>
 #include <ac/signal.h>
 #include <ac/socket.h>
 #include <ac/unistd.h>
diff --git a/servers/slurpd/main.c b/servers/slurpd/main.c
index afe0889e66..c2a71484fa 100644
--- a/servers/slurpd/main.c
+++ b/servers/slurpd/main.c
@@ -17,6 +17,8 @@
 
 #include "portable.h"
 
+#include <ac/stdlib.h>
+
 #include <stdio.h>
 
 #include "slurp.h"