diff --git a/hack/skaffold/virtual-kubelet/Dockerfile b/hack/skaffold/virtual-kubelet/Dockerfile
index b3db23033..793f2b6fa 100644
--- a/hack/skaffold/virtual-kubelet/Dockerfile
+++ b/hack/skaffold/virtual-kubelet/Dockerfile
@@ -1,8 +1,8 @@
 FROM gcr.io/distroless/base
 
-ENV APISERVER_CERT_LOCATION /vkubelet-mock-0-crt.pem
-ENV APISERVER_KEY_LOCATION /vkubelet-mock-0-key.pem
-ENV KUBELET_PORT 10250
+ENV APISERVER_CERT_LOCATION=/vkubelet-mock-0-crt.pem
+ENV APISERVER_KEY_LOCATION=/vkubelet-mock-0-key.pem
+ENV KUBELET_PORT=10250
 
 # Use the pre-built binary in "bin/virtual-kubelet".
 COPY bin/e2e/virtual-kubelet /virtual-kubelet