diff --git a/tasks/configure-ert/task.sh b/tasks/configure-ert/task.sh
index 6e29009d2..6c2fa80fe 100755
--- a/tasks/configure-ert/task.sh
+++ b/tasks/configure-ert/task.sh
@@ -329,7 +329,7 @@ cf_properties=$(
         ".properties.system_blobstore.external.resources_bucket": { "value": "\($terraform_prefix)-resources" },
         ".properties.system_blobstore.external.access_key": { "value": $aws_access_key },
         ".properties.system_blobstore.external.secret_key": { "value": { "secret": $aws_secret_key } },
-        ".properties.system_blobstore.external.signature_version.value": { "value": "4" },
+        ".properties.system_blobstore.external.signature_version": { "value": "4" },
         ".properties.system_blobstore.external.region": { "value": $aws_region },
         ".properties.system_blobstore.external.endpoint": { "value": $s3_endpoint }
       }