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
index 92ca3818bd..bc0ab2e508 100644
--- a/eo-maven-plugin/src/test/java/org/eolang/maven/ArchitectureTest.java
+++ b/eo-maven-plugin/src/test/java/org/eolang/maven/ArchitectureTest.java
@@ -25,6 +25,7 @@
 
 import com.tngtech.archunit.core.importer.ClassFileImporter;
 import com.tngtech.archunit.lang.syntax.ArchRuleDefinition;
+import org.apache.maven.plugins.annotations.Mojo;
 import org.junit.jupiter.api.Test;
 
 /**
@@ -56,4 +57,14 @@ void mojosHaveOneParent() {
             .check(new ClassFileImporter().importPackages("org.eolang.maven"));
     }
 
+    @Test
+    void mojosHaveAnnotation() {
+        ArchRuleDefinition.classes()
+            .that().haveSimpleNameEndingWith("Mojo")
+            .and().doNotHaveSimpleName("SafeMojo")
+            .should()
+            .beAnnotatedWith(Mojo.class)
+            .check(new ClassFileImporter().importPackages("org.eolang.maven"));
+    }
+
 }