diff --git a/README.md b/README.md
index 3099c82..23cc450 100644
--- a/README.md
+++ b/README.md
@@ -60,7 +60,7 @@ fn main() {
     instance.binary_serialize::<_, BigEndian>(&mut serialized_data);
 
     println!("{:?}", instance);
-    println!("{}", hexdump());
+    println!("hex representation:\n{}", hexdump(&serialized_data));
 
     // perform small mutations on the instance
     instance.mutate(&mut mutator, None);
diff --git a/crates-io.md b/crates-io.md
index 3099c82..23cc450 100644
--- a/crates-io.md
+++ b/crates-io.md
@@ -60,7 +60,7 @@ fn main() {
     instance.binary_serialize::<_, BigEndian>(&mut serialized_data);
 
     println!("{:?}", instance);
-    println!("{}", hexdump());
+    println!("hex representation:\n{}", hexdump(&serialized_data));
 
     // perform small mutations on the instance
     instance.mutate(&mut mutator, None);
diff --git a/lain/src/lib.rs b/lain/src/lib.rs
index d7487e8..80a493d 100644
--- a/lain/src/lib.rs
+++ b/lain/src/lib.rs
@@ -58,7 +58,7 @@
 //!     instance.binary_serialize::<_, BigEndian>(&mut serialized_data);
 //!
 //!     println!("{:?}", instance);
-//!     println!("{}", hexdump());
+//!     println!("hex representation:\n{}", hexdump(&serialized_data));
 //!
 //!     // perform small mutations on the instance
 //!     instance.mutate(&mut mutator, None);