diff --git a/applications/venv-manager/containerlab/containerlab.go b/applications/venv-manager/containerlab/containerlab.go
index 714acbdc53e257d4a9d724acf20ca10118be9994..42635a6cfecf3640a253b9dffce7d355df19386d 100644
--- a/applications/venv-manager/containerlab/containerlab.go
+++ b/applications/venv-manager/containerlab/containerlab.go
@@ -16,7 +16,7 @@ type Link struct {
 type Node struct {
 	Kind     string `yaml:"kind"`
 	Image    string `yaml:"image"`
-	MgmtIpv4 string `yaml:"mgmt_ipv4"`
+	MgmtIpv4 string `yaml:"mgmt-ipv4"`
 }
 
 // Topology represent a topology for containerlab.