diff --git a/pkg/api/v1/types.go b/pkg/api/v1/types.go
index 898418c10a8..6fea08876dc 100644
--- a/pkg/api/v1/types.go
+++ b/pkg/api/v1/types.go
@@ -1122,7 +1122,7 @@ type NodeSystemInfo struct {
 	// Kubelet version reported by the node
 	KubeletVersion string `json:"kubeletVersion" description:"Kubelet version reported by the node"`
 	// Kube-proxy version reported by the node
-	KubeProxyVersion string `json:"KubeProxyVersion" description:"Kube-proxy version reported by the node"`
+	KubeProxyVersion string `json:"kubeProxyVersion" description:"Kube-proxy version reported by the node"`
 }
 
 // NodeStatus is information about the current status of a node.
diff --git a/pkg/api/v1beta1/types.go b/pkg/api/v1beta1/types.go
index 4efa13ede21..4bf2fcb2188 100644
--- a/pkg/api/v1beta1/types.go
+++ b/pkg/api/v1beta1/types.go
@@ -967,7 +967,7 @@ type NodeSystemInfo struct {
 	// Kubelet version reported by the node
 	KubeletVersion string `json:"kubeletVersion" description:"Kubelet version reported by the node"`
 	// Kube-proxy version reported by the node
-	KubeProxyVersion string `json:"KubeProxyVersion" description:"Kube-proxy version reported by the node"`
+	KubeProxyVersion string `json:"kubeProxyVersion" description:"Kube-proxy version reported by the node"`
 }
 
 // NodeStatus is information about the current status of a node.
diff --git a/pkg/api/v1beta2/types.go b/pkg/api/v1beta2/types.go
index 76954e96b78..5787f98330a 100644
--- a/pkg/api/v1beta2/types.go
+++ b/pkg/api/v1beta2/types.go
@@ -974,7 +974,7 @@ type NodeSystemInfo struct {
 	// Kubelet version reported by the node
 	KubeletVersion string `json:"kubeletVersion" description:"Kubelet version reported by the node"`
 	// Kube-proxy version reported by the node
-	KubeProxyVersion string `json:"KubeProxyVersion" description:"Kube-proxy version reported by the node"`
+	KubeProxyVersion string `json:"kubeProxyVersion" description:"Kube-proxy version reported by the node"`
 }
 
 // NodeStatus is information about the current status of a node.
diff --git a/pkg/api/v1beta3/types.go b/pkg/api/v1beta3/types.go
index 7545d33987b..26fa04cd59d 100644
--- a/pkg/api/v1beta3/types.go
+++ b/pkg/api/v1beta3/types.go
@@ -1122,7 +1122,7 @@ type NodeSystemInfo struct {
 	// Kubelet version reported by the node
 	KubeletVersion string `json:"kubeletVersion" description:"Kubelet version reported by the node"`
 	// Kube-proxy version reported by the node
-	KubeProxyVersion string `json:"KubeProxyVersion" description:"Kube-proxy version reported by the node"`
+	KubeProxyVersion string `json:"kubeProxyVersion" description:"Kube-proxy version reported by the node"`
 }
 
 // NodeStatus is information about the current status of a node.