diff --git a/docker/log_iterator.go b/docker/log_iterator.go
index db946dd2..c05b6d16 100644
--- a/docker/log_iterator.go
+++ b/docker/log_iterator.go
@@ -137,6 +137,10 @@ func guessLogLevel(logEvent *LogEvent) string {
 				return level
 			}
 
+			if strings.Contains(value, "["+strings.ToUpper(level)+"]") {
+				return level
+			}
+
 			if strings.Contains(value, " "+strings.ToUpper(level)+" ") {
 				return level
 			}