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diff --git a/compiler/rustc_error_codes/src/error_codes/E0593.md b/compiler/rustc_error_codes/src/error_codes/E0593.md
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@@ -0,0 +1,24 @@
+You tried to supply an `Fn`-based type with an incorrect number of arguments
+than what was expected.
+
+Erroneous code example:
+
+```compile_fail,E0593
+fn foo<F: Fn()>(x: F) { }
+
+fn main() {
+    // [E0593] closure takes 1 argument but 0 arguments are required
+    foo(|y| { });
+}
+```
+
+You have to provide the same number of arguments as expected by the `Fn`-based
+type. So to fix the previous example, we need to remove the `y` argument:
+
+```
+fn foo<F: Fn()>(x: F) { }
+
+fn main() {
+    foo(|| { }); // ok!
+}
+```