diff --git a/src/index.js b/src/index.js
index d5be3f8..973b9dc 100644
--- a/src/index.js
+++ b/src/index.js
@@ -71,7 +71,7 @@ function createLogger(options = {}) {
 
       const formattedTime = formatTime(time);
       const titleCSS = colors.title ? `color: ${colors.title(formattedAction)};` : null;
-      const title = `action ${formattedAction.type}${timestamp ? formattedTime : ``}${duration ? ` in ${took.toFixed(2)} ms` : ``}`;
+      const title = `action ${String(formattedAction.type)}${timestamp ? formattedTime : ``}${duration ? ` in ${took.toFixed(2)} ms` : ``}`;
 
       // render
       try {