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diff --git a/usermount.c b/usermount.c
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index 3aafadd..5875c09 100644
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--- a/usermount.c
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+++ b/usermount.c
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@@ -40,6 +40,7 @@
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 #include <sys/stat.h>
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 #include <sys/time.h>
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 #include <sys/types.h>
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+#include <sys/sysmacros.h>
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 #include <errno.h>
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 #include <glob.h>
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 #include <libintl.h>