diff --git a/compiler/rustc_error_codes/src/error_codes/E0423.md b/compiler/rustc_error_codes/src/error_codes/E0423.md
index a98ada17a469c..4af17b1221b9c 100644
--- a/compiler/rustc_error_codes/src/error_codes/E0423.md
+++ b/compiler/rustc_error_codes/src/error_codes/E0423.md
@@ -44,3 +44,14 @@ fn h1() -> i32 {
     // did you mean `a::I`?
 }
 ```
+
+### Enum types used as values
+
+Enums are types and cannot be used directly as values.
+
+```compile_fail,E0423
+fn main(){
+    let x = Option::<i32>;
+    //~^ ERROR expected value,found enum `Option`
+}
+```