diff --git a/runnermanager/runnermanager.go b/runnermanager/runnermanager.go
index f0ff241..9d014b3 100644
--- a/runnermanager/runnermanager.go
+++ b/runnermanager/runnermanager.go
@@ -45,13 +45,14 @@ type runnerJob struct {
 
 func (r *runnerManager) processRequest(req GetRunnerRequest) {
 	var runnerTagsStr strings.Builder
-	fmt.Fprintf(&runnerTagsStr, "%v", req.Tags[0])
+	fmt.Fprintf(&runnerTagsStr, "[%v", req.Tags[0])
 	for _, tag := range req.Tags[1:] {
-		fmt.Fprintf(&runnerTagsStr, " %v", tag)
+		fmt.Fprintf(&runnerTagsStr, ", %v", tag)
 	}
+	fmt.Fprintf(&runnerTagsStr, "]")
 	log.Infof("Got request for runner with tags \"%v\"", runnerTagsStr.String())
 
-	log.Debugf("Finding runner with tags %v", runnerTagsStr)
+	log.Debugf("Finding runner with tags %v", runnerTagsStr.String())
 
 	for i, runner := range r.connectedRunners {
 		// don't allocate runner that is already occupied