diff --git a/src/value/ser.rs b/src/value/ser.rs
index 200c7811..e931abbc 100644
--- a/src/value/ser.rs
+++ b/src/value/ser.rs
@@ -240,6 +240,11 @@ impl serde::Serializer for Serializer {
             map: BTreeMap::new(),
         })
     }
+
+    #[inline]
+    fn is_human_readable(&self) -> bool {
+        false
+    }
 }
 
 pub struct SerializeVec {