diff --git a/README.md b/README.md
index 8504901..9696b7b 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,7 @@ Application Options:
       --scrape.time.graph=                Scrape time for Graph metrics (time.duration) [$SCRAPE_TIME_GRAPH]
       --scrape.time.costs=                Scrape time for costs/consumtion metrics (time.duration; BETA) (default: 0)
                                           [$SCRAPE_TIME_COSTS]
-      --resourcehealth.summary.maxlength= Max length of ResourceHealth summary label (default: 80)
+      --resourcehealth.summary.maxlength= Max length of ResourceHealth summary label (0 = disable summary label) (default: 80)
                                           [$RESOURCEHEALTH_SUMMARY_MAXLENGTH]
       --graph.application.filter=         MS Graph application $filter query eg: startswith(displayName,'A')
                                           [$GRAPH_APPLICATION_FILTER]
diff --git a/config/opts.go b/config/opts.go
index d450011..7ca9402 100644
--- a/config/opts.go
+++ b/config/opts.go
@@ -41,7 +41,7 @@ type (
 		}
 
 		ResourceHealth struct {
-			SummaryMaxLength int `long:"resourcehealth.summary.maxlength"           env:"RESOURCEHEALTH_SUMMARY_MAXLENGTH"  description:"Max length of ResourceHealth summary label"  default:"80"`
+			SummaryMaxLength int `long:"resourcehealth.summary.maxlength"           env:"RESOURCEHEALTH_SUMMARY_MAXLENGTH"  description:"Max length of ResourceHealth summary label (0 = disable summary label)"  default:"80"`
 		}
 
 		// graph settings
diff --git a/metrics_azurerm_health.go b/metrics_azurerm_health.go
index 6fb135d..4abb376 100644
--- a/metrics_azurerm_health.go
+++ b/metrics_azurerm_health.go
@@ -161,7 +161,7 @@ func (m *MetricsCollectorAzureRmHealth) collectSubscription(subscription *armsub
 							"resourceHealth":    resourceHealthLogObject,
 						}).Info("unhealthy resource detected")
 
-						if opts.ResourceHealth.SummaryMaxLength >= 0 {
+						if opts.ResourceHealth.SummaryMaxLength > 0 {
 							summary = truncateStrings(to.String(resourceHealth.Properties.Summary), opts.ResourceHealth.SummaryMaxLength, "...")
 						}
 					}