diff --git a/logger.go b/logger.go
index cbf591f..0dd4b07 100644
--- a/logger.go
+++ b/logger.go
@@ -79,7 +79,7 @@ func (l *Logger) log(level Level, msg interface{}, keyvals ...interface{}) {
 	}
 
 	if l.prefix != "" {
-		kvs = append(kvs, PrefixKey, l.prefix+":")
+		kvs = append(kvs, PrefixKey, l.prefix)
 	}
 
 	if msg != nil {
diff --git a/text.go b/text.go
index 4c0eb48..301ebd0 100644
--- a/text.go
+++ b/text.go
@@ -167,7 +167,7 @@ func (l *Logger) textFormatter(keyvals ...interface{}) {
 			}
 		case PrefixKey:
 			if prefix, ok := keyvals[i+1].(string); ok {
-				prefix = PrefixStyle.Renderer(l.re).Render(prefix)
+				prefix = PrefixStyle.Renderer(l.re).Render(prefix + ":")
 				l.b.WriteString(prefix)
 				l.b.WriteByte(' ')
 			}