diff --git a/src/avalanche/peermanager.cpp b/src/avalanche/peermanager.cpp
--- a/src/avalanche/peermanager.cpp
+++ b/src/avalanche/peermanager.cpp
@@ -161,7 +161,7 @@
         cs_main, return proof->verify(state, ::ChainstateActive().CoinsTip()));
     if (!valid) {
         if (isOrphanState(state)) {
-            orphanProofPool.addProofIfNoConflict(proof);
+            orphanProofPool.addProofIfPreferred(proof);
         }
 
         // Reject invalid proof.
diff --git a/src/avalanche/test/peermanager_tests.cpp b/src/avalanche/test/peermanager_tests.cpp
--- a/src/avalanche/test/peermanager_tests.cpp
+++ b/src/avalanche/test/peermanager_tests.cpp
@@ -967,9 +967,8 @@
     BOOST_CHECK(pm.isOrphan(orphan10->getId()));
 
     BOOST_CHECK(!pm.registerProof(orphan20));
-    BOOST_CHECK(!pm.isOrphan(orphan20->getId()));
-    BOOST_CHECK(!pm.exists(orphan20->getId()));
-    BOOST_CHECK(pm.isOrphan(orphan10->getId()));
+    BOOST_CHECK(pm.isOrphan(orphan20->getId()));
+    BOOST_CHECK(!pm.exists(orphan10->getId()));
 }
 
 BOOST_AUTO_TEST_CASE(preferred_conflicting_proof) {