diff --git a/clippy_utils/src/sym.rs b/clippy_utils/src/sym.rs
index 7d579d85d808..71e62f047463 100644
--- a/clippy_utils/src/sym.rs
+++ b/clippy_utils/src/sym.rs
@@ -50,7 +50,6 @@ macro_rules! generate {
     Cargo_toml: "Cargo.toml",
     Child,
     Command,
-    Cow,
     Current,
     DOUBLE_QUOTE: "\"",
     DebugStruct,