1 files changed, 5 insertions, 1 deletions

diff --git a/bin/df/df.c b/bin/df/df.c
index f75b468905e9..fc8cb344547b 100644
--- a/bin/df/df.c
+++ b/bin/df/df.c
@@ -122,7 +122,7 @@ main(argc, argv)
 	char *mntpt, *mntpath, **vfslist;
 
 	vfslist = NULL;
-	while ((ch = getopt(argc, argv, "abHhikmnPt:")) != -1)
+	while ((ch = getopt(argc, argv, "abgHhikmnPt:")) != -1)
 		switch (ch) {
 		case 'a':
 			aflag = 1;
@@ -133,6 +133,10 @@ main(argc, argv)
 			putenv("BLOCKSIZE=512");
 			hflag = 0;
 			break;
+		case 'g':
+			putenv("BLOCKSIZE=1g");
+			hflag = 0;
+			break;
 		case 'H':
 			hflag = UNITS_SI;
 			valp = vals_si;