diff --git a/promrus.go b/promrus.go
index 4c20ab8..90720d1 100644
--- a/promrus.go
+++ b/promrus.go
@@ -22,7 +22,7 @@ func NewPrometheusHook() (*PrometheusHook, error) {
 	}, []string{"level"})
 	// Initialise counters for all supported levels:
 	for _, level := range supportedLevels {
-		counterVec.WithLabelValues(level.String()).Set(0)
+		counterVec.WithLabelValues(level.String())
 	}
 	// Try to register the counter vector:
 	err := prometheus.Register(counterVec)