diff --git a/r/compute_backend_service.html.markdown b/r/compute_backend_service.html.markdown
index 5ce2bbde..9b419059 100644
--- a/r/compute_backend_service.html.markdown
+++ b/r/compute_backend_service.html.markdown
@@ -89,9 +89,9 @@ The following arguments are supported:
 * `region` - (Optional) The Region in which the created address should reside.
     If it is not provided, the provider region is used.
 
-* `session_affinity` - (Optional) How to distribute load. Options are "NONE" (no
-    affinity), "CLIENT\_IP" (hash of the source/dest addresses / ports), and
-    "GENERATED\_COOKIE" (distribute load using a generated session cookie).
+* `session_affinity` - (Optional) How to distribute load. Options are `NONE` (no
+    affinity), `CLIENT_IP` (hash of the source/dest addresses / ports), and
+    `GENERATED_COOKIE` (distribute load using a generated session cookie).
 
 * `timeout_sec` - (Optional) The number of secs to wait for a backend to respond
     to a request before considering the request failed. Defaults to `30`.
diff --git a/r/compute_region_backend_service.html.markdown b/r/compute_region_backend_service.html.markdown
index 0b81f147..10ee1256 100644
--- a/r/compute_region_backend_service.html.markdown
+++ b/r/compute_region_backend_service.html.markdown
@@ -20,6 +20,7 @@ resource "google_compute_region_backend_service" "foobar" {
   description           = "Hello World 1234"
   protocol              = "TCP"
   timeout_sec           = 10
+  session_affinity      = "CLIENT_IP"
 
   backend {
     group = "${google_compute_instance_group_manager.foo.instance_group}"
@@ -84,6 +85,10 @@ The following arguments are supported:
 * `protocol` - (Optional) The protocol for incoming requests. Defaults to
     `HTTP`.
 
+* `session_affinity` - (Optional) How to distribute load. Options are `NONE` (no
+    affinity), `CLIENT_IP`, `CLIENT_IP_PROTO`, or `CLIENT_IP_PORT_PROTO`.
+    Defaults to `NONE`.
+
 * `region` - (Optional) The Region in which the created address should reside.
     If it is not provided, the provider region is used.