diff --git a/client/driver/rkt.go b/client/driver/rkt.go
index 3dbcea8a0..c670d42bc 100644
--- a/client/driver/rkt.go
+++ b/client/driver/rkt.go
@@ -39,9 +39,6 @@ const (
 	// version to maintain an uniform interface across all drivers
 	minRktVersion = "0.14.0"
 
-	// bytesToMB is the conversion from bytes to megabytes.
-	bytesToMB = 1024 * 1024
-
 	// The key populated in the Node Attributes to indicate the presence of the
 	// Rkt driver
 	rktDriverAttr = "driver.rkt"
@@ -241,7 +238,7 @@ func (d *RktDriver) Start(ctx *ExecContext, task *structs.Task) (DriverHandle, e
 	}
 
 	// Add memory isolator
-	cmdArgs = append(cmdArgs, fmt.Sprintf("--memory=%vM", int64(task.Resources.MemoryMB)*bytesToMB))
+	cmdArgs = append(cmdArgs, fmt.Sprintf("--memory=%vM", int64(task.Resources.MemoryMB)))
 
 	// Add CPU isolator
 	cmdArgs = append(cmdArgs, fmt.Sprintf("--cpu=%vm", int64(task.Resources.CPU)))