diff --git a/impl/maven-core/src/test/java/org/apache/maven/DefaultMavenTest.java b/impl/maven-core/src/test/java/org/apache/maven/DefaultMavenTest.java
index 7c1f8e10205b..bbdc02ec92c1 100644
--- a/impl/maven-core/src/test/java/org/apache/maven/DefaultMavenTest.java
+++ b/impl/maven-core/src/test/java/org/apache/maven/DefaultMavenTest.java
@@ -78,7 +78,7 @@ void testEnsureResolverSessionHasMavenWorkspaceReader() throws Exception {
     }
 
     @Test
-    void testThatErrorDuringProjectDependencyGraphCreationAreStored() throws Exception {
+    void testThatErrorsDuringProjectDependencyGraphCreationAreStored() throws Exception {
         MavenExecutionRequest request =
                 createMavenExecutionRequest(getProject("cyclic-reference")).setGoals(asList("validate"));
 
@@ -87,6 +87,16 @@ void testThatErrorDuringProjectDependencyGraphCreationAreStored() throws Excepti
         assertEquals(ProjectCycleException.class, result.getExceptions().get(0).getClass());
     }
 
+    @Test
+    void testThatNamespacePrefixesAreAllowed() throws Exception {
+        MavenExecutionRequest request =
+                createMavenExecutionRequest(getProject("prefix")).setGoals(asList("validate"));
+
+        MavenExecutionResult result = maven.execute(request);
+
+        assertTrue(result.getExceptions().isEmpty());
+    }
+
     @Test
     void testMavenProjectNoDuplicateArtifacts() throws Exception {
         MavenProjectHelper mavenProjectHelper = getContainer().lookup(MavenProjectHelper.class);
diff --git a/impl/maven-core/src/test/projects/default-maven/prefix/pom.xml b/impl/maven-core/src/test/projects/default-maven/prefix/pom.xml
new file mode 100644
index 000000000000..de7d1b0a4083
--- /dev/null
+++ b/impl/maven-core/src/test/projects/default-maven/prefix/pom.xml
@@ -0,0 +1,10 @@
+<mvn:project xmlns:mvn="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <mvn:modelVersion>4.0.0</mvn:modelVersion>
+
+  <mvn:groupId>prefix</mvn:groupId>
+  <mvn:artifactId>prefix</mvn:artifactId>
+  <mvn:version>1.0-SNAPSHOT</mvn:version>
+  <mvn:packaging>pom</mvn:packaging>
+
+</mvn:project>