diff --git a/tvix/castore/src/blobservice/from_addr.rs b/tvix/castore/src/blobservice/from_addr.rs
index db221f05a..1f73c802c 100644
--- a/tvix/castore/src/blobservice/from_addr.rs
+++ b/tvix/castore/src/blobservice/from_addr.rs
@@ -115,7 +115,11 @@ mod tests {
     /// Correct scheme to connect to localhost over http, but with additional path, which is invalid.
     #[test_case("grpc+http://localhost/some-path", false; "grpc valid invalid host and path")]
     #[tokio::test]
-    async fn test_from_addr_tokio(uri_str: &str, is_ok: bool) {
-        assert_eq!(from_addr(uri_str).await.is_ok(), is_ok)
+    async fn test_from_addr_tokio(uri_str: &str, exp_succeed: bool) {
+        if exp_succeed {
+            from_addr(uri_str).await.expect("should succeed");
+        } else {
+            assert!(from_addr(uri_str).await.is_err(), "should fail");
+        }
     }
 }
diff --git a/tvix/castore/src/directoryservice/from_addr.rs b/tvix/castore/src/directoryservice/from_addr.rs
index 0a5a0464c..14251ee4b 100644
--- a/tvix/castore/src/directoryservice/from_addr.rs
+++ b/tvix/castore/src/directoryservice/from_addr.rs
@@ -114,7 +114,11 @@ mod tests {
     /// Correct scheme to connect to localhost over http, but with additional path, which is invalid.
     #[test_case("grpc+http://localhost/some-path", false; "grpc valid invalid host and path")]
     #[tokio::test]
-    async fn test_from_addr_tokio(uri_str: &str, is_ok: bool) {
-        assert_eq!(from_addr(uri_str).await.is_ok(), is_ok)
+    async fn test_from_addr_tokio(uri_str: &str, exp_succeed: bool) {
+        if exp_succeed {
+            from_addr(uri_str).await.expect("should succeed");
+        } else {
+            assert!(from_addr(uri_str).await.is_err(), "should fail");
+        }
     }
 }
diff --git a/tvix/store/src/pathinfoservice/from_addr.rs b/tvix/store/src/pathinfoservice/from_addr.rs
index 5113b19c1..f5a287cd7 100644
--- a/tvix/store/src/pathinfoservice/from_addr.rs
+++ b/tvix/store/src/pathinfoservice/from_addr.rs
@@ -174,7 +174,7 @@ mod tests {
     /// Correct scheme to connect to localhost over http, but with additional path, which is invalid.
     #[test_case("grpc+http://localhost/some-path", false; "grpc valid invalid host and path")]
     #[tokio::test]
-    async fn test_from_addr_tokio(uri_str: &str, is_ok: bool) {
+    async fn test_from_addr_tokio(uri_str: &str, exp_succeed: bool) {
         let resp = from_addr(
             uri_str,
             gen_blob_service().into(),
@@ -182,6 +182,10 @@ mod tests {
         )
         .await;
 
-        assert_eq!(resp.is_ok(), is_ok);
+        if exp_succeed {
+            resp.expect("should succeed");
+        } else {
+            assert!(resp.is_err(), "should fail");
+        }
     }
 }