diff --git a/eo-maven-plugin/pom.xml b/eo-maven-plugin/pom.xml
index a8d310f826..559551bd50 100644
--- a/eo-maven-plugin/pom.xml
+++ b/eo-maven-plugin/pom.xml
@@ -281,6 +281,12 @@ SOFTWARE.
       <artifactId>jping</artifactId>
       <!-- version from parent POM -->
     </dependency>
+    <dependency>
+      <groupId>com.tngtech.archunit</groupId>
+      <artifactId>archunit</artifactId>
+      <version>1.3.0</version>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
   <build>
     <plugins>
diff --git a/eo-maven-plugin/src/test/java/org/eolang/maven/ArchitectureTest.java b/eo-maven-plugin/src/test/java/org/eolang/maven/ArchitectureTest.java
new file mode 100644
index 0000000000..7cbfcd719e
--- /dev/null
+++ b/eo-maven-plugin/src/test/java/org/eolang/maven/ArchitectureTest.java
@@ -0,0 +1,48 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2025 Objectionary.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.eolang.maven;
+
+import com.tngtech.archunit.core.importer.ClassFileImporter;
+import com.tngtech.archunit.lang.syntax.ArchRuleDefinition;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Test case for architectural conventions.
+ *
+ * @since 0.51.0
+ */
+@SuppressWarnings({ "JTCOP.RuleAllTestsHaveProductionClass", "JTCOP.RuleAssertionMessage" })
+final class ArchitectureTest {
+
+    @Test
+    void mojosAreInPlace() {
+        ArchRuleDefinition.classes()
+            .that().haveSimpleNameEndingWith("Mojo")
+            .and().doNotHaveSimpleName("SafeMojo")
+            .should().resideInAPackage("org.eolang.maven")
+            .andShould().bePublic()
+            .check(new ClassFileImporter().importPackages("org.eolang.maven"));
+    }
+
+}
diff --git a/eo-maven-plugin/src/test/java/org/eolang/maven/ParseMojoTest.java b/eo-maven-plugin/src/test/java/org/eolang/maven/ParseMojoTest.java
index 2297591f96..2c5abb7822 100644
--- a/eo-maven-plugin/src/test/java/org/eolang/maven/ParseMojoTest.java
+++ b/eo-maven-plugin/src/test/java/org/eolang/maven/ParseMojoTest.java
@@ -108,7 +108,7 @@ void failsOnTimeout(@Mktmp final Path temp) {
             () -> new FakeMaven(temp)
                 .withHelloWorld()
                 .with("timeout", 0)
-                .execute(InfiniteMojo.class),
+                .execute(Infinite.class),
             CatalogsTest.TO_ADD_MESSAGE
         );
     }
@@ -229,7 +229,7 @@ void parsesConcurrentlyWithLotsOfPrograms(@Mktmp final Path temp) throws IOExcep
      * @since 0.29
      */
     @Mojo(name = "infinite", defaultPhase = LifecyclePhase.VALIDATE)
-    private static final class InfiniteMojo extends SafeMojo {
+    private static final class Infinite extends SafeMojo {
         @Override
         public void exec() {
             try {