diff --git a/blockbook.go b/blockbook.go
index 9320cc53..093c4e62 100644
--- a/blockbook.go
+++ b/blockbook.go
@@ -50,17 +50,17 @@ var (
 	repair      = flag.Bool("repair", false, "repair the database")
 	prof        = flag.String("prof", "", "http server binding [address]:port of the interface to profiling data /debug/pprof/ (default no profiling)")
 
-	syncChunk   = flag.Int("chunk", 100, "block chunk size for processing")
-	syncWorkers = flag.Int("workers", 8, "number of workers to process blocks")
+	syncChunk   = flag.Int("chunk", 100, "block chunk size for processing in bulk mode")
+	syncWorkers = flag.Int("workers", 8, "number of workers to process blocks in bulk mode")
 	dryRun      = flag.Bool("dryrun", false, "do not index blocks, only download")
 
 	debugMode = flag.Bool("debug", false, "debug mode, return more verbose errors, reload templates on each request")
 
 	internalBinding = flag.String("internal", "", "internal http server binding [address]:port, (default no internal server)")
 
-	publicBinding = flag.String("public", "", "public http server binding [address]:port[/path], (default no public server)")
+	publicBinding = flag.String("public", "", "public http server binding [address]:port[/path] (default no public server)")
 
-	certFiles = flag.String("certfile", "", "to enable SSL specify path to certificate files without extension, expecting <certfile>.crt and <certfile>.key, (default no SSL)")
+	certFiles = flag.String("certfile", "", "to enable SSL specify path to certificate files without extension, expecting <certfile>.crt and <certfile>.key (default no SSL)")
 
 	explorerURL = flag.String("explorer", "", "address of blockchain explorer")