diff --git a/third_party/terraform/resources/resource_bigtable_gc_policy.go b/third_party/terraform/resources/resource_bigtable_gc_policy.go
index 1a440268ce31..bc81d5f1bd69 100644
--- a/third_party/terraform/resources/resource_bigtable_gc_policy.go
+++ b/third_party/terraform/resources/resource_bigtable_gc_policy.go
@@ -58,6 +58,7 @@ func resourceBigtableGCPolicy() *schema.Resource {
 				Optional:    true,
 				ForceNew:    true,
 				Description: `GC policy that applies to all cells older than the given age.`,
+				MaxItems:    1,
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"days": {
@@ -89,7 +90,6 @@ func resourceBigtableGCPolicy() *schema.Resource {
 							Type:         schema.TypeInt,
 							Required:     true,
 							Description:  `Number of version before applying the GC policy.`,
-							ValidateFunc: validation.IntAtLeast(1),
 						},
 					},
 				},
diff --git a/third_party/terraform/website/docs/r/bigtable_gc_policy.html.markdown b/third_party/terraform/website/docs/r/bigtable_gc_policy.html.markdown
index 8454cb71415d..7c6ff3c237cd 100644
--- a/third_party/terraform/website/docs/r/bigtable_gc_policy.html.markdown
+++ b/third_party/terraform/website/docs/r/bigtable_gc_policy.html.markdown
@@ -42,7 +42,7 @@ resource "google_bigtable_gc_policy" "policy" {
   column_family = "name"
 
   max_age {
-    duration = "168h" # 7 days
+    duration = "168h"
   }
 }
 ```
@@ -89,9 +89,9 @@ The following arguments are supported:
 
 `max_age` supports the following arguments:
 
-* `days` - (Deprecated) Number of days before applying GC policy.
+* `days` - (Optional, Deprecated in favor of duration) Number of days before applying GC policy.
 
-* `duration` - (Required) Duration before applying GC policy (ex. "8h"). This is required when `days` isn't set
+* `duration` - (Optional) Duration before applying GC policy (ex. "8h"). This is required when `days` isn't set
 
 -----