diff --git a/nscd/connections.c b/nscd/connections.c
index 1631212..a6b9808 100644
--- a/nscd/connections.c
+++ b/nscd/connections.c
@@ -59,6 +59,7 @@
 #include <resolv/resolv.h>
 
 #include <kernel-features.h>
+#include <libc-internal.h>
 
 
 /* Support to run nscd as an unprivileged user */