diff --git a/test/nonreg/graphml/GraphmlTest.java b/test/nonreg/graphml/GraphmlTest.java
index b411ceafe..6ee1431c7 100644
--- a/test/nonreg/graphml/GraphmlTest.java
+++ b/test/nonreg/graphml/GraphmlTest.java
@@ -25,7 +25,7 @@ public class GraphmlTest {
 
 	private static final String TRIPLE_QUOTE = "\"\"\"";
 
-	protected String getXmlAndCheckXmlAndDescription(final String expectedDescription)
+	protected void checkXmlAndDescription(final String expectedDescription)
 			throws IOException, UnsupportedEncodingException {
 		final String actualResult = runPlantUML(expectedDescription);
 		final String xmlExpected = readStringFromSourceFile(getDiagramFile(), "{{{", "}}}");
@@ -38,8 +38,6 @@ public class GraphmlTest {
 		if (sortString(actualResult).equals(sortString(xmlExpected)) == false) {
 			assertEquals(xmlExpected, actualResult, "Generated GraphML is not ok");
 		}
-
-		return actualResult;
 	}
 
 	private String sortString(String s) {
diff --git a/test/nonreg/graphml/component/GML0000_Test.java b/test/nonreg/graphml/component/GML0000_Test.java
index 1defb06cb..40018e16f 100644
--- a/test/nonreg/graphml/component/GML0000_Test.java
+++ b/test/nonreg/graphml/component/GML0000_Test.java
@@ -33,12 +33,7 @@ public class GML0000_Test extends GraphmlTest {
 
 	@Test
 	void testSimple() throws IOException {
-		final String xml = getXmlAndCheckXmlAndDescription("(1 entities)");
-
-		// Those tests are ULGY: please improve them!
-		assertTrue(xml.contains("<graphml "));
-		assertTrue(xml.contains("<graph edgedefault=\"undirected\">"));
-		assertTrue(xml.contains("<node id=\"comp1\"/>"));
+		checkXmlAndDescription("(1 entities)");
 	}
 
 }
diff --git a/test/nonreg/graphml/component/GML0001_Test.java b/test/nonreg/graphml/component/GML0001_Test.java
index d139f9d8c..1ddf83368 100644
--- a/test/nonreg/graphml/component/GML0001_Test.java
+++ b/test/nonreg/graphml/component/GML0001_Test.java
@@ -35,13 +35,7 @@ public class GML0001_Test extends GraphmlTest {
 
 	@Test
 	void testSimple() throws IOException {
-		final String xml = getXmlAndCheckXmlAndDescription("(2 entities)");
-
-		// Those tests are ULGY: please improve them!
-		assertTrue(xml.contains("<graphml "));
-		assertTrue(xml.contains("<graph edgedefault=\"undirected\">"));
-		assertTrue(xml.contains("<node id=\"comp1\"/>"));
-		assertTrue(xml.contains("<node id=\"comp2\"/>"));
+		checkXmlAndDescription("(2 entities)");
 	}
 
 }