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-rw-r--r--hurd/hurdprio.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/hurd/hurdprio.c b/hurd/hurdprio.c
index 7530c8f34c..b1e0c06450 100644
--- a/hurd/hurdprio.c
+++ b/hurd/hurdprio.c
@@ -19,6 +19,7 @@
 
 #include <hurd/resource.h>
 #include <hurd.h>
+#include <unistd.h>
 
 error_t
 _hurd_priority_which_map (enum __priority_which which, int who,