diff --git a/openpgp-card/src/parse/algo_info.rs b/openpgp-card/src/parse/algo_info.rs
index 93dc6e0..bd4a2d0 100644
--- a/openpgp-card/src/parse/algo_info.rs
+++ b/openpgp-card/src/parse/algo_info.rs
@@ -112,7 +112,7 @@ mod test {
             0x1,
         ];
 
-        let ai = AlgoInfo::try_from(data.to_vec()).unwrap();
+        let ai = AlgoInfo::try_from(&data[..]).unwrap();
 
         assert_eq!(
             ai,
@@ -206,7 +206,7 @@ mod test {
             0xd,
         ];
 
-        let ai = AlgoInfo::try_from(data.to_vec()).unwrap();
+        let ai = AlgoInfo::try_from(&data[..]).unwrap();
 
         assert_eq!(
             ai,
@@ -360,7 +360,7 @@ mod test {
             0x4, 0x1, 0x97, 0x55, 0x1, 0x5, 0x1,
         ];
 
-        let ai = AlgoInfo::try_from(data.to_vec()).unwrap();
+        let ai = AlgoInfo::try_from(&data[..]).unwrap();
 
         assert_eq!(
             ai,
diff --git a/openpgp-card/src/parse/extended_cap.rs b/openpgp-card/src/parse/extended_cap.rs
index 9cf6066..4d710dc 100644
--- a/openpgp-card/src/parse/extended_cap.rs
+++ b/openpgp-card/src/parse/extended_cap.rs
@@ -101,12 +101,13 @@ mod test {
     use crate::parse::extended_cap::{ExtendedCap, Features};
     use hex_literal::hex;
     use std::collections::HashSet;
+    use std::convert::TryFrom;
     use std::iter::FromIterator;
 
     #[test]
     fn test_ec() {
         let data = hex!("7d 00 0b fe 08 00 00 ff 00 00");
-        let ec = ExtendedCap::from(&data).unwrap();
+        let ec = ExtendedCap::try_from(&data[..]).unwrap();
 
         assert_eq!(
             ec,