diff --git a/fs/config/configflags/configflags.go b/fs/config/configflags/configflags.go
index f5ee5a3ef..7d856cf12 100644
--- a/fs/config/configflags/configflags.go
+++ b/fs/config/configflags/configflags.go
@@ -54,7 +54,7 @@ func AddFlags(ci *fs.ConfigInfo, flagSet *pflag.FlagSet) {
 	flags.StringVarP(flagSet, &cacheDir, "cache-dir", "", config.GetCacheDir(), "Directory rclone will use for caching", "Config")
 	flags.StringVarP(flagSet, &tempDir, "temp-dir", "", os.TempDir(), "Directory rclone will use for temporary files", "Config")
 	flags.BoolVarP(flagSet, &ci.CheckSum, "checksum", "c", ci.CheckSum, "Check for changes with size & checksum (if available, or fallback to size only).", "Copy")
-	flags.BoolVarP(flagSet, &ci.SizeOnly, "size-only", "", ci.SizeOnly, "Skip based on size only, not mod-time or checksum", "Copy")
+	flags.BoolVarP(flagSet, &ci.SizeOnly, "size-only", "", ci.SizeOnly, "Skip based on size only, not modtime or checksum", "Copy")
 	flags.BoolVarP(flagSet, &ci.IgnoreTimes, "ignore-times", "I", ci.IgnoreTimes, "Don't skip files that match size and time - transfer all files", "Copy")
 	flags.BoolVarP(flagSet, &ci.IgnoreExisting, "ignore-existing", "", ci.IgnoreExisting, "Skip all files that exist on destination", "Copy")
 	flags.BoolVarP(flagSet, &ci.IgnoreErrors, "ignore-errors", "", ci.IgnoreErrors, "Delete even if there are I/O errors", "Sync")
@@ -80,14 +80,14 @@ func AddFlags(ci *fs.ConfigInfo, flagSet *pflag.FlagSet) {
 	flags.BoolVarP(flagSet, &ci.UseServerModTime, "use-server-modtime", "", ci.UseServerModTime, "Use server modified time instead of object metadata", "Config")
 	flags.BoolVarP(flagSet, &ci.NoGzip, "no-gzip-encoding", "", ci.NoGzip, "Don't set Accept-Encoding: gzip", "Networking")
 	flags.IntVarP(flagSet, &ci.MaxDepth, "max-depth", "", ci.MaxDepth, "If set limits the recursion depth to this", "Filter")
-	flags.BoolVarP(flagSet, &ci.IgnoreSize, "ignore-size", "", false, "Ignore size when skipping use mod-time or checksum", "Copy")
+	flags.BoolVarP(flagSet, &ci.IgnoreSize, "ignore-size", "", false, "Ignore size when skipping use modtime or checksum", "Copy")
 	flags.BoolVarP(flagSet, &ci.IgnoreChecksum, "ignore-checksum", "", ci.IgnoreChecksum, "Skip post copy check of checksums", "Copy")
 	flags.BoolVarP(flagSet, &ci.IgnoreCaseSync, "ignore-case-sync", "", ci.IgnoreCaseSync, "Ignore case when synchronizing", "Copy")
 	flags.BoolVarP(flagSet, &ci.NoTraverse, "no-traverse", "", ci.NoTraverse, "Don't traverse destination file system on copy", "Copy")
 	flags.BoolVarP(flagSet, &ci.CheckFirst, "check-first", "", ci.CheckFirst, "Do all the checks before starting transfers", "Copy")
 	flags.BoolVarP(flagSet, &ci.NoCheckDest, "no-check-dest", "", ci.NoCheckDest, "Don't check the destination, copy regardless", "Copy")
 	flags.BoolVarP(flagSet, &ci.NoUnicodeNormalization, "no-unicode-normalization", "", ci.NoUnicodeNormalization, "Don't normalize unicode characters in filenames", "Config")
-	flags.BoolVarP(flagSet, &ci.NoUpdateModTime, "no-update-modtime", "", ci.NoUpdateModTime, "Don't update destination mod-time if files identical", "Copy")
+	flags.BoolVarP(flagSet, &ci.NoUpdateModTime, "no-update-modtime", "", ci.NoUpdateModTime, "Don't update destination modtime if files identical", "Copy")
 	flags.StringArrayVarP(flagSet, &ci.CompareDest, "compare-dest", "", nil, "Include additional comma separated server-side paths during comparison", "Copy")
 	flags.StringArrayVarP(flagSet, &ci.CopyDest, "copy-dest", "", nil, "Implies --compare-dest but also copies files from paths into destination", "Copy")
 	flags.StringVarP(flagSet, &ci.BackupDir, "backup-dir", "", ci.BackupDir, "Make backups into hierarchy based in DIR", "Sync")