diff --git a/lib/src/test_signing_backend.rs b/lib/src/test_signing_backend.rs
index 5e99dee49..5b20ab60b 100644
--- a/lib/src/test_signing_backend.rs
+++ b/lib/src/test_signing_backend.rs
@@ -63,13 +63,13 @@ impl SigningBackend for TestSigningBackend {
             Ok(Verification {
                 status: SigStatus::Good,
                 key,
-                display: None,
+                display: Some("test-display".into()),
             })
         } else {
             Ok(Verification {
                 status: SigStatus::Bad,
                 key,
-                display: None,
+                display: Some("test-display".into()),
             })
         }
     }
diff --git a/lib/tests/test_signing.rs b/lib/tests/test_signing.rs
index 68d637a4d..2591d41f3 100644
--- a/lib/tests/test_signing.rs
+++ b/lib/tests/test_signing.rs
@@ -48,7 +48,7 @@ fn good_verification() -> Option<Verification> {
     Some(Verification {
         status: SigStatus::Good,
         key: Some("impeccable".to_owned()),
-        display: None,
+        display: Some("test-display".into()),
     })
 }