diff --git a/src/functions.rs b/src/functions.rs
index 364a3e7..a0e641a 100644
--- a/src/functions.rs
+++ b/src/functions.rs
@@ -10,6 +10,6 @@ pub(crate) fn get_proposal_bytes(proposal: String) -> Vec<u8> {
 	} else {
 		// This is a file path
 		let contents = fs::read_to_string(proposal).expect("Should give a valid file path");
-		hex::decode(contents.as_str().trim_start_matches("0x").trim()).expect("Valid proposal")
+		hex::decode(contents.as_str().trim().trim_start_matches("0x")).expect("Valid proposal")
 	}
 }
diff --git a/src/tests.rs b/src/tests.rs
index 27c25a3..d55e1f5 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -158,6 +158,7 @@ fn upgrade_args_for_only_relay() -> UpgradeArgs {
 		coretime: None,
 		filename: None,
 		additional: None,
+		no_runtime_checks: false,
 	}
 }
 
@@ -175,6 +176,7 @@ fn upgrade_args_for_only_asset_hub() -> UpgradeArgs {
 		coretime: None,
 		filename: None,
 		additional: None,
+		no_runtime_checks: false,
 	}
 }
 
@@ -192,6 +194,7 @@ fn upgrade_args_for_all() -> UpgradeArgs {
 		coretime: None,
 		filename: None,
 		additional: None,
+		no_runtime_checks: false,
 	}
 }
 
@@ -210,6 +213,7 @@ fn upgrade_args_with_additional() -> UpgradeArgs {
 		filename: None,
 		// `system.remark("test")` on Polkadot Asset Hub
 		additional: Some(String::from("0x00001074657374")),
+		no_runtime_checks: false,
 	}
 }
 
@@ -242,6 +246,18 @@ fn call_info_from_bytes_works() {
 	assert_eq!(proposal_call_info.hash, &bad_verification[..]);
 }
 
+#[test]
+fn get_proposal_bytes_trims_file_contents() {
+	let path = std::env::temp_dir()
+		.join(format!("opengov-cli-proposal-{}-trim-test.call", std::process::id()));
+	std::fs::write(&path, "\n  0x00001074657374\n").expect("write proposal file");
+
+	let proposal_bytes = get_proposal_bytes(path.to_string_lossy().into_owned());
+	std::fs::remove_file(&path).ok();
+
+	assert_eq!(proposal_bytes, hex::decode("00001074657374").expect("hex"));
+}
+
 #[test]
 fn call_info_from_runtime_call_works() {
 	let remark_to_verify = PolkadotRuntimeCall::System(PolkadotRelaySystemCall::remark {