diff --git a/maven-surefire-common/src/test/java/org/apache/maven/plugin/surefire/booterclient/ForkConfigurationTest.java b/maven-surefire-common/src/test/java/org/apache/maven/plugin/surefire/booterclient/ForkConfigurationTest.java
index b1db277c9e..2a56452318 100644
--- a/maven-surefire-common/src/test/java/org/apache/maven/plugin/surefire/booterclient/ForkConfigurationTest.java
+++ b/maven-surefire-common/src/test/java/org/apache/maven/plugin/surefire/booterclient/ForkConfigurationTest.java
@@ -175,6 +175,10 @@ public void testCliArgs() throws Exception
         }
         assertThat( endOfFileArg ).isPositive();
         Path argFile = Paths.get( cliAsString.substring( beginOfFileArg + 1, endOfFileArg ) );
+        System.out.println( "cliAsString: " + cliAsString );
+        System.out.println( "beginOfFileArg: " + beginOfFileArg );
+        System.out.println( "endOfFileArg: " + endOfFileArg );
+        System.out.println( "argFile: " + argFile );
         String argFileText = new String( readAllBytes( argFile ) );
         assertThat( argFileText )
             .contains( "arg2" )
@@ -283,7 +287,7 @@ public void testArglineWithNewline()
             new StartupConfiguration( "", cpConfig, clc, ALL, Collections.<String[]>emptyList() );
 
         Commandline commandLine = config.createCommandLine( startup, 1, temporaryFolder() );
-        assertTrue( commandLine.toString().contains( "abc def" ) );
+        assertThat( commandLine.toString() ).contains( "abc def" );
     }
 
     @Test