diff --git a/core/fuzz/Cargo.toml b/core/fuzz/Cargo.toml
index ad1190012..d21631978 100644
--- a/core/fuzz/Cargo.toml
+++ b/core/fuzz/Cargo.toml
@@ -31,7 +31,7 @@ path = "src/main.rs"
 
 [[bin]]
 name = "block_read_v1"
-path = "fuzz_targets/block_read_v2.rs"
+path = "fuzz_targets/block_read_v1.rs"
 
 [[bin]]
 name = "block_read_v2"
diff --git a/core/fuzz/src/main.rs b/core/fuzz/src/main.rs
index 7e1825658..5672561a9 100644
--- a/core/fuzz/src/main.rs
+++ b/core/fuzz/src/main.rs
@@ -7,12 +7,39 @@ use std::fs::{self, File};
 use std::path::Path;
 
 fn main() {
-	generate("transaction_read", Transaction::default()).unwrap();
-	generate("block_read", Block::default()).unwrap();
-	generate("compact_block_read", CompactBlock::from(Block::default())).unwrap();
+	generate(
+		"transaction_read_v1",
+		ser::ProtocolVersion(1),
+		Transaction::default(),
+	)
+	.unwrap();
+	generate("block_read_v1", ser::ProtocolVersion(1), Block::default()).unwrap();
+	generate(
+		"compact_block_read_v1",
+		ser::ProtocolVersion(1),
+		CompactBlock::from(Block::default()),
+	)
+	.unwrap();
+	generate(
+		"transaction_read_v2",
+		ser::ProtocolVersion(2),
+		Transaction::default(),
+	)
+	.unwrap();
+	generate("block_read_v2", ser::ProtocolVersion(2), Block::default()).unwrap();
+	generate(
+		"compact_block_read_v2",
+		ser::ProtocolVersion(2),
+		CompactBlock::from(Block::default()),
+	)
+	.unwrap();
 }
 
-fn generate<W: ser::Writeable>(target: &str, obj: W) -> Result<(), ser::Error> {
+fn generate<W: ser::Writeable>(
+	target: &str,
+	version: ser::ProtocolVersion,
+	obj: W,
+) -> Result<(), ser::Error> {
 	let dir_path = Path::new("corpus").join(target);
 	if !dir_path.is_dir() {
 		fs::create_dir_all(&dir_path).map_err(|e| {
@@ -25,7 +52,7 @@ fn generate<W: ser::Writeable>(target: &str, obj: W) -> Result<(), ser::Error> {
 	if !pattern_path.exists() {
 		let mut file = File::create(&pattern_path)
 			.map_err(|e| ser::Error::IOErr("can't create a pattern file".to_owned(), e.kind()))?;
-		ser::serialize(&mut file, &obj)
+		ser::serialize(&mut file, version, &obj)
 	} else {
 		Ok(())
 	}