diff --git a/openpgp-card/src/lib.rs b/openpgp-card/src/lib.rs
index 022c9fd..4995cd5 100644
--- a/openpgp-card/src/lib.rs
+++ b/openpgp-card/src/lib.rs
@@ -158,27 +158,3 @@ impl KeyType {
         }
     }
 }
-
-#[cfg(test)]
-mod test {
-    use super::tlv::tag::Tag;
-    use super::tlv::{Tlv, TlvEntry};
-
-    #[test]
-    fn test_tlv() {
-        let cpkt = Tlv(
-            Tag(vec![0x7F, 0x48]),
-            TlvEntry::S(vec![
-                0x91, 0x03, 0x92, 0x82, 0x01, 0x00, 0x93, 0x82, 0x01, 0x00,
-            ]),
-        );
-
-        assert_eq!(
-            cpkt.serialize(),
-            vec![
-                0x7F, 0x48, 0x0A, 0x91, 0x03, 0x92, 0x82, 0x01, 0x00, 0x93,
-                0x82, 0x01, 0x00,
-            ]
-        );
-    }
-}
diff --git a/openpgp-card/src/tlv/mod.rs b/openpgp-card/src/tlv/mod.rs
index 0bd40a4..5d74e9f 100644
--- a/openpgp-card/src/tlv/mod.rs
+++ b/openpgp-card/src/tlv/mod.rs
@@ -119,6 +119,23 @@ mod test {
     use anyhow::Result;
     use hex_literal::hex;
 
+    #[test]
+    fn test_tlv0() {
+        let cpkt = Tlv(
+            Tag(vec![0x7F, 0x48]),
+            TlvEntry::S(vec![
+                0x91, 0x03, 0x92, 0x82, 0x01, 0x00, 0x93, 0x82, 0x01, 0x00,
+            ]),
+        );
+
+        assert_eq!(
+            cpkt.serialize(),
+            vec![
+                0x7F, 0x48, 0x0A, 0x91, 0x03, 0x92, 0x82, 0x01, 0x00, 0x93,
+                0x82, 0x01, 0x00,
+            ]
+        );
+    }
     #[test]
     fn test_tlv() -> Result<()> {
         // From OpenPGP card spec § 7.2.6