diff --git a/pkg/config/app.go b/pkg/config/app.go
index 853d60a28..4921d8eef 100644
--- a/pkg/config/app.go
+++ b/pkg/config/app.go
@@ -409,7 +409,7 @@ func GetAppStatuses(apps []App, MachineReadable bool) (map[string]map[string]str
 				result["chaos"] = chaos
 			}
 
-			labelKey = fmt.Sprintf("coop-cloud.%s.chaos_version", name)
+			labelKey = fmt.Sprintf("coop-cloud.%s.chaos-version", name)
 			if chaosVersion, ok := service.Spec.Labels[labelKey]; ok {
 				result["chaosVersion"] = chaosVersion
 			}
@@ -517,12 +517,12 @@ func SetChaosLabel(compose *composetypes.Config, stackName string, chaos bool) {
 	}
 }
 
-// SetChaosVersionLabel adds the label 'coop-cloud.${STACK_NAME}.chaos_version=$(GIT_COMMIT)' to the app container
+// SetChaosVersionLabel adds the label 'coop-cloud.${STACK_NAME}.chaos-version=$(GIT_COMMIT)' to the app container
 func SetChaosVersionLabel(compose *composetypes.Config, stackName string, chaosVersion string) {
 	for _, service := range compose.Services {
 		if service.Name == "app" {
-			logrus.Debugf("set label 'coop-cloud.%s.chaos_version' to %v for %s", stackName, chaosVersion, stackName)
-			labelKey := fmt.Sprintf("coop-cloud.%s.chaos_version", stackName)
+			logrus.Debugf("set label 'coop-cloud.%s.chaos-version' to %v for %s", stackName, chaosVersion, stackName)
+			labelKey := fmt.Sprintf("coop-cloud.%s.chaos-version", stackName)
 			service.Deploy.Labels[labelKey] = chaosVersion
 		}
 	}