diff --git a/log_test.go b/log_test.go
index fb83b29..026ee90 100644
--- a/log_test.go
+++ b/log_test.go
@@ -59,10 +59,17 @@ func Test_PlainTextLogs(t *testing.T) {
 
 func Test_MutedPlainTextLogs(t *testing.T) {
 	InitStoneLog(ERROR, false, true)
+
+	// This won't change the log level
+	SetLogLevel(-1)
+
+	// Following won't appear
 	Trace("This is a trace log")
 	Debug("This is a debug log")
 	Observation("This is an observation log")
 	Hypothesis("This is a hypothesis log")
+
+	// Until this one
 	Failure("This is a failure log")
 }