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-rw-r--r--utils/osmo-auc-gen.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/utils/osmo-auc-gen.c b/utils/osmo-auc-gen.c
index 266d0d6a..7a3c124c 100644
--- a/utils/osmo-auc-gen.c
+++ b/utils/osmo-auc-gen.c
@@ -26,6 +26,7 @@
#include <errno.h>
#include <string.h>
#include <getopt.h>
+#include <unistd.h>
#include <osmocom/crypt/auth.h>
#include <osmocom/core/utils.h>