diff --git a/src/main/java/org/springframework/data/jpa/support/ClasspathScanningPersistenceUnitPostProcessor.java b/src/main/java/org/springframework/data/jpa/support/ClasspathScanningPersistenceUnitPostProcessor.java
index 5050fc841..9e92d94e6 100644
--- a/src/main/java/org/springframework/data/jpa/support/ClasspathScanningPersistenceUnitPostProcessor.java
+++ b/src/main/java/org/springframework/data/jpa/support/ClasspathScanningPersistenceUnitPostProcessor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2013 the original author or authors.
+ * Copyright 2011-2014 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.
@@ -16,6 +16,7 @@
 package org.springframework.data.jpa.support;
 
 import java.io.IOException;
+import java.net.URI;
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.Set;
@@ -51,6 +52,7 @@ public class ClasspathScanningPersistenceUnitPostProcessor implements Persistenc
 	private static final Logger LOG = LoggerFactory.getLogger(ClasspathScanningPersistenceUnitPostProcessor.class);
 
 	private final String basePackage;
+
 	private ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(getClass().getClassLoader());
 	private String mappingFileNamePattern;
 
@@ -142,7 +144,7 @@ public class ClasspathScanningPersistenceUnitPostProcessor implements Persistenc
 
 		for (Resource resource : scannedResources) {
 			try {
-				String resourcePath = resource.getURI().getPath();
+				String resourcePath = getResourcePath(resource.getURI());
 				String resourcePathInClasspath = resourcePath.substring(resourcePath.indexOf(basePackagePathComponent));
 				mappingFileUris.add(resourcePathInClasspath);
 			} catch (IOException e) {
@@ -152,4 +154,30 @@ public class ClasspathScanningPersistenceUnitPostProcessor implements Persistenc
 
 		return mappingFileUris;
 	}
+
+	/**
+	 * Returns the path from the given {@link URI}. In case the given {@link URI} is opaque, e.g. beginning with jar:file,
+	 * the path is extracted from URI by leaving out the protocol prefix.
+	 * 
+	 * @param uri
+	 * @return
+	 * @see DATAJPA-519
+	 */
+	private static String getResourcePath(URI uri) throws IOException {
+
+		if (uri.isOpaque()) {
+			// e.g. jar:file:/foo/lib/somelib.jar!/com/acme/orm.xml
+			String rawPath = uri.toString();
+			if (rawPath != null) {
+				int exclamationMarkIndex = rawPath.lastIndexOf('!');
+				if (exclamationMarkIndex > -1) {
+
+					// /com/acme/orm.xml
+					return rawPath.substring(exclamationMarkIndex + 1);
+				}
+			}
+		}
+
+		return uri.getPath();
+	}
 }
diff --git a/src/test/java/org/springframework/data/jpa/support/ClasspathScanningPersistenceUnitPostProcessorUnitTests.java b/src/test/java/org/springframework/data/jpa/support/ClasspathScanningPersistenceUnitPostProcessorUnitTests.java
index 927c9589a..3e8866e8f 100644
--- a/src/test/java/org/springframework/data/jpa/support/ClasspathScanningPersistenceUnitPostProcessorUnitTests.java
+++ b/src/test/java/org/springframework/data/jpa/support/ClasspathScanningPersistenceUnitPostProcessorUnitTests.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2013 the original author or authors.
+ * Copyright 2011-2014 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.
@@ -17,6 +17,11 @@ package org.springframework.data.jpa.support;
 
 import static org.mockito.Mockito.*;
 
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Set;
+
 import javax.persistence.Entity;
 
 import org.junit.Test;
@@ -24,8 +29,13 @@ import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.runners.MockitoJUnitRunner;
 import org.springframework.core.io.DefaultResourceLoader;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.core.io.UrlResource;
+import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
 import org.springframework.orm.jpa.persistenceunit.MutablePersistenceUnitInfo;
 import org.springframework.orm.jpa.persistenceunit.PersistenceUnitPostProcessor;
+import org.springframework.test.util.ReflectionTestUtils;
 
 /**
  * Unit tests for {@link ClasspathScanningPersistenceUnitPostProcessor}.
@@ -108,6 +118,49 @@ public class ClasspathScanningPersistenceUnitPostProcessorUnitTests {
 		verify(pui).addMappingFileName("org/springframework/data/jpa/support/module2/module2-orm.xml");
 	}
 
+	/**
+	 * @see DATAJPA-519
+	 */
+	@Test
+	public void shouldFindJpaMappingFilesFromNestedJarLocationsOnClasspath() {
+
+		String nestedModule3Path = "org/springframework/data/jpa/support/module3/module3-orm.xml";
+		final String fileInJarUrl = "jar:file:/foo/bar/lib/somelib.jar!/" + nestedModule3Path;
+
+		ResourceLoader resolver = new PathMatchingResourcePatternResolver(new DefaultResourceLoader()) {
+
+			public Resource[] getResources(String locationPattern) throws IOException {
+
+				Resource[] resources = super.getResources(locationPattern);
+				resources = Arrays.copyOf(resources, resources.length + 1);
+				resources[resources.length - 1] = new UrlResource(fileInJarUrl);
+
+				return resources;
+			}
+
+			@Override
+			protected Set<Resource> doFindPathMatchingJarResources(Resource rootDirResource, String subPattern)
+					throws IOException {
+
+				if (fileInJarUrl.equals(rootDirResource.getURI().toString())) {
+					return Collections.singleton(rootDirResource);
+				}
+
+				return super.doFindPathMatchingJarResources(rootDirResource, subPattern);
+			}
+		};
+
+		ClasspathScanningPersistenceUnitPostProcessor processor = new ClasspathScanningPersistenceUnitPostProcessor(
+				basePackage);
+		ReflectionTestUtils.setField(processor, "resolver", resolver);
+		processor.setMappingFileNamePattern("**/*orm.xml");
+		processor.postProcessPersistenceUnitInfo(pui);
+
+		verify(pui).addMappingFileName("org/springframework/data/jpa/support/module1/module1-orm.xml");
+		verify(pui).addMappingFileName("org/springframework/data/jpa/support/module2/module2-orm.xml");
+		verify(pui).addMappingFileName(nestedModule3Path);
+	}
+
 	@Entity
 	public static class SampleEntity {