diff --git a/website/source/docs/providers/aws/r/security_group.html.markdown b/website/source/docs/providers/aws/r/security_group.html.markdown
index 83757be39b..0e253e707e 100644
--- a/website/source/docs/providers/aws/r/security_group.html.markdown
+++ b/website/source/docs/providers/aws/r/security_group.html.markdown
@@ -112,7 +112,7 @@ be in place, you can use this `egress` block:
       from_port = 0
       to_port = 0
       protocol = "-1"
-      cidr_block = "0.0.0.0/0"
+      cidr_blocks = ["0.0.0.0/0"]
     }
 
 ## Attributes Reference