diff --git a/crates/cfg/src/cfg_expr.rs b/crates/cfg/src/cfg_expr.rs
index 3f12a3fa80c..283ff968fbc 100644
--- a/crates/cfg/src/cfg_expr.rs
+++ b/crates/cfg/src/cfg_expr.rs
@@ -44,7 +44,7 @@ impl fmt::Display for CfgAtom {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
             CfgAtom::Flag(name) => write!(f, "{}", name),
-            CfgAtom::KeyValue { key, value } => write!(f, "{} = \"{}\"", key, value),
+            CfgAtom::KeyValue { key, value } => write!(f, "{} = {:?}", key, value),
         }
     }
 }