diff --git a/hack/prepare-supervisor-on-kind.sh b/hack/prepare-supervisor-on-kind.sh
index d2645de8..5fccad0a 100755
--- a/hack/prepare-supervisor-on-kind.sh
+++ b/hack/prepare-supervisor-on-kind.sh
@@ -82,7 +82,7 @@ metadata:
 spec:
   issuer: "$PINNIPED_TEST_SUPERVISOR_UPSTREAM_OIDC_ISSUER"
   tls:
-    certificateAuthorityData: "$(echo "$PINNIPED_TEST_SUPERVISOR_UPSTREAM_OIDC_ISSUER_CA_BUNDLE" | base64)"
+    certificateAuthorityData: "$PINNIPED_TEST_SUPERVISOR_UPSTREAM_OIDC_ISSUER_CA_BUNDLE"
   authorizationConfig:
     additionalScopes: [ ${PINNIPED_TEST_SUPERVISOR_UPSTREAM_OIDC_ADDITIONAL_SCOPES} ]
   claims: