diff --git a/lib/libc/gen/strtofflags.c b/lib/libc/gen/strtofflags.c
index 292f1c53a8d..be54f6a7570 100644
--- a/lib/libc/gen/strtofflags.c
+++ b/lib/libc/gen/strtofflags.c
@@ -59,6 +59,9 @@ static struct {
 	{ "nosimmutable",	SF_IMMUTABLE,	0 },
 	{ "nosunlnk",		SF_NOUNLINK,	0 },
 	{ "nosunlink",		SF_NOUNLINK,	0 },
+#ifdef SF_SNAPSHOT
+	{ "nosnapshot",		SF_SNAPSHOT,	0 },
+#endif
 	{ "nouappnd",		UF_APPEND,	0 },
 	{ "nouappend",		UF_APPEND,	0 },
 	{ "nouchg",		UF_IMMUTABLE,	0 },