diff --git a/command/flag/megabytes.go b/command/flag/megabytes.go
index fba36da4951..edb780c9b7d 100644
--- a/command/flag/megabytes.go
+++ b/command/flag/megabytes.go
@@ -10,7 +10,7 @@ import (
 )
 
 const (
-	AllowedUnits = "mg"
+	AllowedUnits = "mgt"
 )
 
 type Megabytes struct {
diff --git a/command/flag/megabytes_test.go b/command/flag/megabytes_test.go
index c790976923e..385efc921f4 100644
--- a/command/flag/megabytes_test.go
+++ b/command/flag/megabytes_test.go
@@ -47,6 +47,22 @@ var _ = Describe("Megabytes", func() {
 			})
 		})
 
+		When("the suffix is T", func() {
+			It("interprets the number as terabytes", func() {
+				err := megabytes.UnmarshalFlag("2T")
+				Expect(err).ToNot(HaveOccurred())
+				Expect(megabytes.Value).To(BeEquivalentTo(2097152))
+			})
+		})
+
+		When("the suffix is TB", func() {
+			It("interprets the number as terabytes", func() {
+				err := megabytes.UnmarshalFlag("3TB")
+				Expect(err).ToNot(HaveOccurred())
+				Expect(megabytes.Value).To(BeEquivalentTo(3145728))
+			})
+		})
+
 		When("the suffix is lowercase", func() {
 			It("is case insensitive", func() {
 				err := megabytes.UnmarshalFlag("7m")