diff --git a/spring-data-neo4j/src/main/java/org/springframework/data/neo4j/conversion/Neo4jOgmEntityInstantiatorAdapter.java b/spring-data-neo4j/src/main/java/org/springframework/data/neo4j/conversion/Neo4jOgmEntityInstantiatorAdapter.java
index 5e5bfff57..a3919b4ba 100644
--- a/spring-data-neo4j/src/main/java/org/springframework/data/neo4j/conversion/Neo4jOgmEntityInstantiatorAdapter.java
+++ b/spring-data-neo4j/src/main/java/org/springframework/data/neo4j/conversion/Neo4jOgmEntityInstantiatorAdapter.java
@@ -20,6 +20,7 @@ import java.util.Collections;
 import java.util.Map;
 
 import org.neo4j.ogm.metadata.reflect.EntityAccessManager;
+import org.neo4j.ogm.session.Utils;
 import org.springframework.core.convert.ConversionService;
 import org.springframework.data.convert.EntityInstantiator;
 import org.springframework.data.mapping.PreferredConstructor;
@@ -109,7 +110,8 @@ public class Neo4jOgmEntityInstantiatorAdapter implements org.neo4j.ogm.session.
 						? EntityAccessManager.merge(collectionType, value, new Object[] {}, elementType)
 						: EntityAccessManager.merge(collectionType, value, Collections.EMPTY_LIST, elementType);
 			}
-			return value;
+
+			return Utils.coerceTypes(parameter.getType().getType(), value);
 		}
 	}
 }
diff --git a/spring-data-neo4j/src/test/java/org/springframework/data/neo4j/conversion/Neo4jOgmEntityInstantiatorAdapterTests.java b/spring-data-neo4j/src/test/java/org/springframework/data/neo4j/conversion/Neo4jOgmEntityInstantiatorAdapterTests.java
index ac96e1617..de839105b 100644
--- a/spring-data-neo4j/src/test/java/org/springframework/data/neo4j/conversion/Neo4jOgmEntityInstantiatorAdapterTests.java
+++ b/spring-data-neo4j/src/test/java/org/springframework/data/neo4j/conversion/Neo4jOgmEntityInstantiatorAdapterTests.java
@@ -34,6 +34,7 @@ import org.neo4j.graphdb.Node;
 import org.neo4j.harness.ServerControls;
 import org.neo4j.harness.TestServerBuilders;
 import org.neo4j.ogm.drivers.bolt.driver.BoltDriver;
+import org.neo4j.ogm.session.Session;
 import org.neo4j.ogm.session.SessionFactory;
 import org.neo4j.procedure.Context;
 import org.neo4j.procedure.Name;
@@ -42,6 +43,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.data.neo4j.conversion.ogm618.CoercedNumericInCtor;
 import org.springframework.data.neo4j.conversion.ogm618.MyNode;
 import org.springframework.data.neo4j.conversion.ogm618.MyNodeRepository;
 import org.springframework.data.neo4j.conversion.ogm618.ResultHolder;
@@ -69,13 +71,28 @@ public class Neo4jOgmEntityInstantiatorAdapterTests {
 
 		serverControls = TestServerBuilders.newInProcessBuilder()
 				.withProcedure(Neo4jOgmEntityInstantiatorAdapterTests.ListReturningThing.class)
-				.withFixture("CREATE (m:MyNode{name: 'All the', things: []})").newServer();
+				.withFixture("CREATE (m:MyNode{name: 'All the', things: []})")
+				.withFixture("CREATE (m:CoercedNumericInCtor{name: 'Whatever', lfdnr: 4711})")
+				.newServer();
 		boltURI = serverControls.boltURI();
 	}
 
 	@Autowired
 	private MyNodeRepository myNodeRepository;
 
+	@Autowired
+	private Session session;
+
+	@Test // GH-1712
+	public void longVsIntMustNotRelyOnConverter() {
+
+		Optional<CoercedNumericInCtor> optionalNode = session.loadAll(CoercedNumericInCtor.class).stream().findFirst();
+		assertThat(optionalNode).hasValueSatisfying(object -> {
+			assertThat(object.getLfdnr()).isEqualTo(4711);
+			assertThat(object.getName()).isEqualTo("Whatever");
+		});
+	}
+
 	@Test
 	public void ctorShouldHandleEmptyArrayFromAttributes() {
 
diff --git a/spring-data-neo4j/src/test/java/org/springframework/data/neo4j/conversion/ogm618/CoercedNumericInCtor.java b/spring-data-neo4j/src/test/java/org/springframework/data/neo4j/conversion/ogm618/CoercedNumericInCtor.java
new file mode 100644
index 000000000..193f71e61
--- /dev/null
+++ b/spring-data-neo4j/src/test/java/org/springframework/data/neo4j/conversion/ogm618/CoercedNumericInCtor.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2011-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.neo4j.conversion.ogm618;
+
+import org.neo4j.ogm.annotation.GeneratedValue;
+import org.neo4j.ogm.annotation.Id;
+import org.neo4j.ogm.annotation.NodeEntity;
+
+/**
+ * @author Michael J. Simons
+ */
+@NodeEntity
+public class CoercedNumericInCtor {
+
+	@Id @GeneratedValue
+	private Long id;
+
+	private String name;
+
+	private Integer lfdnr;
+
+	public CoercedNumericInCtor(String name, Integer lfdnr) {
+		this.name = name;
+		this.lfdnr = lfdnr;
+	}
+
+	public Long getId() {
+		return id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public Integer getLfdnr() {
+		return lfdnr;
+	}
+}