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diff --git a/compiler/rustc_error_codes/src/error_codes/E0530.md b/compiler/rustc_error_codes/src/error_codes/E0530.md
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@@ -0,0 +1,57 @@
+A binding shadowed something it shouldn't.
+
+A match arm or a variable has a name that is already used by
+something else, e.g.
+
+* struct name
+* enum variant
+* static
+* associated constant
+
+This error may also happen when an enum variant *with fields* is used
+in a pattern, but without its fields.
+
+```compile_fail
+enum Enum {
+    WithField(i32)
+}
+
+use Enum::*;
+match WithField(1) {
+    WithField => {} // error: missing (_)
+}
+```
+
+Match bindings cannot shadow statics:
+
+```compile_fail,E0530
+static TEST: i32 = 0;
+
+let r = 123;
+match r {
+    TEST => {} // error: name of a static
+}
+```
+
+Fixed examples:
+
+```
+static TEST: i32 = 0;
+
+let r = 123;
+match r {
+    some_value => {} // ok!
+}
+```
+
+or
+
+```
+const TEST: i32 = 0; // const, not static
+
+let r = 123;
+match r {
+    TEST => {} // const is ok!
+    other_values => {}
+}
+```