diff --git a/rest-api-spec/test/create/60_refresh.yaml b/rest-api-spec/test/create/60_refresh.yaml
index 546a9382665..99bfbc3cff6 100644
--- a/rest-api-spec/test/create/60_refresh.yaml
+++ b/rest-api-spec/test/create/60_refresh.yaml
@@ -7,6 +7,7 @@
           body:
               settings:
                   index.refresh_interval: -1
+                  number_of_replicas: 0
  - do:
       cluster.health:
           wait_for_status: yellow
diff --git a/rest-api-spec/test/index/60_refresh.yaml b/rest-api-spec/test/index/60_refresh.yaml
index 2b11a070cc3..af6ea59766f 100644
--- a/rest-api-spec/test/index/60_refresh.yaml
+++ b/rest-api-spec/test/index/60_refresh.yaml
@@ -7,6 +7,7 @@
           body:
               settings:
                   index.refresh_interval: -1
+                  number_of_replicas: 0
  - do:
       cluster.health:
           wait_for_status: yellow
diff --git a/rest-api-spec/test/update/60_refresh.yaml b/rest-api-spec/test/update/60_refresh.yaml
index f7379b5d456..6048292ceab 100644
--- a/rest-api-spec/test/update/60_refresh.yaml
+++ b/rest-api-spec/test/update/60_refresh.yaml
@@ -7,6 +7,7 @@
           body:
               settings:
                   index.refresh_interval: -1
+                  number_of_replicas: 0
  - do:
       cluster.health:
           wait_for_status: yellow