diff --git a/surefire-booter/pom.xml b/surefire-booter/pom.xml
index db7e3d02fc..c3c0a553e6 100644
--- a/surefire-booter/pom.xml
+++ b/surefire-booter/pom.xml
@@ -85,6 +85,16 @@
       <plugin>
         <artifactId>maven-dependency-plugin</artifactId>
         <executions>
+          <execution>
+            <id>show-test-classpath</id>
+            <phase>generate-sources</phase>
+            <goals>
+              <goal>build-classpath</goal>
+            </goals>
+            <configuration>
+              <includeScope>test</includeScope>
+            </configuration>
+          </execution>
           <execution>
             <id>build-test-classpath</id>
             <phase>generate-sources</phase>
@@ -125,7 +135,6 @@
         <configuration>
           <argLine>${jvm.args.tests} ${jacoco.agent}</argLine>
             <useFile>true</useFile>
-            <redirectTestOutputToFile>true</redirectTestOutputToFile>
           <includes>
             <include>**/JUnit4SuiteTest.java</include>
           </includes>
diff --git a/surefire-booter/src/test/java/org/apache/maven/surefire/booter/NewClassLoaderRunner.java b/surefire-booter/src/test/java/org/apache/maven/surefire/booter/NewClassLoaderRunner.java
index 8fd653b204..154a87ea88 100644
--- a/surefire-booter/src/test/java/org/apache/maven/surefire/booter/NewClassLoaderRunner.java
+++ b/surefire-booter/src/test/java/org/apache/maven/surefire/booter/NewClassLoaderRunner.java
@@ -216,6 +216,7 @@ private static URL[] toClassPath()
             }
             catch ( IOException e )
             {
+                e.printStackTrace();
                 return new URL[0];
             }
         }
@@ -225,7 +226,7 @@ private static Collection<URL> toPathList( String path ) throws MalformedURLExce
             Collection<URL> classPath = new HashSet<>();
             for ( String file : path.split( pathSeparator ) )
             {
-                classPath.add( new File( file ).toURL() );
+                classPath.add( new File( file ).toURI().toURL() );
             }
             return classPath;
         }
@@ -241,13 +242,15 @@ private static Collection<URL> toPathList()
                 {
                     File f = new File( file );
                     File dir = f.getParentFile();
-                    classPath.add( ( dir.getName().equals( "target" ) ? new File( dir, "classes" ) : f ).toURL() );
+                    classPath.add(
+                        ( dir.getName().equals( "target" ) ? new File( dir, "classes" ) : f ).toURI().toURL() );
                 }
-                classPath.add( new File( "target/classes" ).toURL() );
-                classPath.add( new File( "target/test-classes" ).toURL() );
+                classPath.add( new File( "target/classes" ).toURI().toURL() );
+                classPath.add( new File( "target/test-classes" ).toURI().toURL() );
             }
             catch ( IOException e )
             {
+                e.printStackTrace();
                 // turn to java.class.path
                 classPath.clear();
             }