diff --git a/substrate/client/beefy/src/tests.rs b/substrate/client/beefy/src/tests.rs
index 1d035a6a44..b5ff27c808 100644
--- a/substrate/client/beefy/src/tests.rs
+++ b/substrate/client/beefy/src/tests.rs
@@ -75,9 +75,9 @@ impl BuildStorage for Genesis {
 
 #[test]
 fn beefy_protocol_name() {
-	let chain_spec = GenericChainSpec::<Genesis>::from_json_file(std::path::PathBuf::from(
-		"../chain-spec/res/chain_spec.json",
-	))
+	let chain_spec = GenericChainSpec::<Genesis>::from_json_bytes(
+		&include_bytes!("../../chain-spec/res/chain_spec.json")[..],
+	)
 	.unwrap()
 	.cloned_box();
 
diff --git a/substrate/client/finality-grandpa/src/communication/tests.rs b/substrate/client/finality-grandpa/src/communication/tests.rs
index e41d21fc06..0ec5092a2a 100644
--- a/substrate/client/finality-grandpa/src/communication/tests.rs
+++ b/substrate/client/finality-grandpa/src/communication/tests.rs
@@ -551,9 +551,9 @@ fn local_chain_spec() -> Box<dyn sc_chain_spec::ChainSpec> {
 			Ok(())
 		}
 	}
-	let chain_spec = GenericChainSpec::<Genesis>::from_json_file(std::path::PathBuf::from(
-		"../chain-spec/res/chain_spec.json",
-	))
+	let chain_spec = GenericChainSpec::<Genesis>::from_json_bytes(
+		&include_bytes!("../../../chain-spec/res/chain_spec.json")[..],
+	)
 	.unwrap();
 	chain_spec.cloned_box()
 }