diff --git a/CHANGELOG.md b/CHANGELOG.md
index 04c0facdc79..56e5ff636c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,8 @@ As a minor extension, we have adopted a slightly different versioning convention
 
 - `mithril-aggregator` node produces artifact for different signed entity types in parallel.
 
+- Fix `Agency is theirs` error in the `ChainReader` when the underlying `Chain sync` client does not have agency.
+
 - **UNSTABLE** Cardano transactions certification:
 
   - Make Cardano transaction signing settings configurable via the CD.
diff --git a/Cargo.lock b/Cargo.lock
index b8b5ffc69f8..08391fbac62 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3703,7 +3703,7 @@ dependencies = [
 
 [[package]]
 name = "mithril-common"
-version = "0.4.34"
+version = "0.4.35"
 dependencies = [
  "anyhow",
  "async-trait",
diff --git a/mithril-common/Cargo.toml b/mithril-common/Cargo.toml
index d25094cb163..08f8b3f4216 100644
--- a/mithril-common/Cargo.toml
+++ b/mithril-common/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mithril-common"
-version = "0.4.34"
+version = "0.4.35"
 description = "Common types, interfaces, and utilities for Mithril nodes."
 authors = { workspace = true }
 edition = { workspace = true }
diff --git a/mithril-common/src/chain_reader/pallas_chain_reader.rs b/mithril-common/src/chain_reader/pallas_chain_reader.rs
index 3a96434bef7..e41c3893274 100644
--- a/mithril-common/src/chain_reader/pallas_chain_reader.rs
+++ b/mithril-common/src/chain_reader/pallas_chain_reader.rs
@@ -54,9 +54,11 @@ impl PallasChainReader {
         let client = self.get_client().await?;
         let chainsync = client.chainsync();
 
-        chainsync
-            .find_intersect(vec![point.to_owned().into()])
-            .await?;
+        if chainsync.has_agency() {
+            chainsync
+                .find_intersect(vec![point.to_owned().into()])
+                .await?;
+        }
 
         Ok(())
     }
@@ -327,6 +329,19 @@ mod tests {
             let client = chain_reader.get_client().await.unwrap();
             client.chainsync().request_next().await.unwrap();
 
+            // make sure that the chainsync client returns an error when attempting to find intersection without agency
+            client
+                .chainsync()
+                .find_intersect(vec![known_point.clone()])
+                .await
+                .expect_err("chainsync find_intersect without agency should fail");
+
+            // make sure that setting the chain point is harmless when the chainsync client does not have agency
+            chain_reader
+                .set_chain_point(&ChainPoint::from(known_point.clone()))
+                .await
+                .unwrap();
+
             chain_reader.get_next_chain_block().await.unwrap().unwrap()
         });
 
diff --git a/mithril-test-lab/mithril-end-to-end/src/mithril/aggregator.rs b/mithril-test-lab/mithril-end-to-end/src/mithril/aggregator.rs
index 1f5d236da6d..0649ce9d49f 100644
--- a/mithril-test-lab/mithril-end-to-end/src/mithril/aggregator.rs
+++ b/mithril-test-lab/mithril-end-to-end/src/mithril/aggregator.rs
@@ -89,7 +89,7 @@ impl Aggregator {
             ("CARDANO_TRANSACTIONS_DATABASE_CONNECTION_POOL_SIZE", "5"),
             (
                 "CARDANO_TRANSACTIONS_SIGNING_CONFIG__SECURITY_PARAMETER",
-                "15",
+                "1",
             ),
             ("CARDANO_TRANSACTIONS_SIGNING_CONFIG__STEP", "15"),
         ]);