diff --git a/prometheus/main.go b/prometheus/main.go
index 1219f43..707ae79 100644
--- a/prometheus/main.go
+++ b/prometheus/main.go
@@ -34,7 +34,7 @@ func init() {
                 contentTag += ":" + len(request.Alerts.Firing)
             }
             
-            content := fmt.Sprintf("[%s] %s", contentTag strings.Join(request.CommonAnnotations.Values()," "))
+            content := fmt.Sprintf("[%s] %s", contentTag, strings.Join(request.CommonAnnotations.Values()," "))
             logger = logger.WithField("body", content)
 
 			ok := false