1 files changed, 2 insertions, 0 deletions
diff --git a/isgps.c b/isgps.c
index 1158d7f7..5e87d742 100644
--- a/isgps.c
+++ b/isgps.c
@@ -57,7 +57,9 @@ You are not expected to understand any of this.
 *****************************************************************************/
 
 #include <sys/types.h>
+#ifndef S_SPLINT_S
 #include <unistd.h>
+#endif /* S_SPLINT_S */
 #include <stdlib.h>
 #include <string.h>
 #include <stdbool.h>