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-rw-r--r--driver_aivdm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/driver_aivdm.c b/driver_aivdm.c
index 8f90eaf4..d45d3f08 100644
--- a/driver_aivdm.c
+++ b/driver_aivdm.c
@@ -15,7 +15,9 @@
#include <string.h>
#include <math.h>
#include <ctype.h>
+#ifndef S_SPLINT_S
#include <unistd.h>
+#endif /* S_SPLINT_S */
#include <time.h>
#include <stdio.h>