diff --git a/bfa_client/src/client/bfa_client.go b/bfa_client/src/client/bfa_client.go
index cc1cfe3f91e32031bb59006147649fba2b86c07b..7bce3f4fd8e18e5440188acc60b561f30dd25518 100644
--- a/bfa_client/src/client/bfa_client.go
+++ b/bfa_client/src/client/bfa_client.go
@@ -190,15 +190,19 @@ func weiTo(wei *big.Float, unit string) (value *big.Float, ok bool) {
 
 func sealers() {
 	var (
-		blockNumber int64
-		lastBlock   bool
-		timestamp   bool
-		difficulty  bool
-		balance     bool
-		header      bool
-		format      string
-		formatStr   string
-		unit        string
+		blockNumber  int64
+		lastBlock    bool
+		timestamp    bool
+		difficulty   bool
+		balance      bool
+		header       bool
+		format       string
+		formatStr    string
+		unit         string
+		list         []string
+		lastBlockLen int64
+		timestampLen int64
+		balanceLen   int64
 	)
 	description = "Presenta la lista de selladores. Opcionalmente presenta información sobre los selladores."
 	setFlags()
@@ -236,23 +240,25 @@ func sealers() {
 		util.PrintJson(sealers)
 		return
 	}
-	var (
-		list         []string
-		lastBlockLen int64
-		timestampLen int64
-		balanceLen   int64
-	)
+
+	if len(format) > 0 {
+		format = parseFormatString(format)
+		timestampLen = int64(len(format))
+	} else {
+		timestampLen = 10
+	}
+
 	for sealer := range sealers {
 		list = append(list, sealer)
 	}
 	if formatStr != "" {
 		sort.Strings(list)
-		formatStr = strings.Replace(formatStr, "{sealer}", "%[1]v", 1)
-		formatStr = strings.Replace(formatStr, "{last-block}", "%[3]v", 1)
-		formatStr = strings.Replace(formatStr, "{timestamp}", "%[5]v", 1)
-		formatStr = strings.Replace(formatStr, "{difficulty}", "%[6]v", 1)
-		formatStr = strings.Replace(formatStr, "{balance}", "%[8]v", 1)
-		timestamp = false
+		formatStr = strings.Replace(formatStr, "%", "%%", -1)
+		formatStr = strings.Replace(formatStr, "{sealer}", "%[1]v", -1)
+		formatStr = strings.Replace(formatStr, "{last-block}", "%[3]v", -1)
+		formatStr = strings.Replace(formatStr, "{timestamp}", "%[5]v", -1)
+		formatStr = strings.Replace(formatStr, "{difficulty}", "%[6]v", -1)
+		formatStr = strings.Replace(formatStr, "{balance}", "%[8]v", -1)
 	} else {
 		switch {
 		case lastBlock:
@@ -271,12 +277,6 @@ func sealers() {
 		}
 		if timestamp {
 			formatStr += " %[4]*[5]v"
-			if len(format) > 0 {
-				format = parseFormatString(format)
-				timestampLen = int64(len(format))
-			} else {
-				timestampLen = 10
-			}
 		}
 		if difficulty {
 			formatStr += " %2[6]v"