diff --git a/core-maven-plugins/httproutes-generator-maven-plugin/pom.xml b/core-maven-plugins/httproutes-generator-maven-plugin/pom.xml
index ecfc24ba1..d560d7f72 100644
--- a/core-maven-plugins/httproutes-generator-maven-plugin/pom.xml
+++ b/core-maven-plugins/httproutes-generator-maven-plugin/pom.xml
@@ -110,6 +110,25 @@
                     <target>21</target>
                 </configuration>
             </plugin>
+            <plugin>
+                <groupId>org.jacoco</groupId>
+                <artifactId>jacoco-maven-plugin</artifactId>
+                <version>0.8.15</version>
+                <executions>
+                    <execution>
+                        <goals>
+                            <goal>prepare-agent</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>report</id>
+                        <phase>verify</phase>
+                        <goals>
+                            <goal>report</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>
 
diff --git a/core-maven-plugins/httproutes-generator-maven-plugin/src/main/java/com/netcracker/routes/gateway/plugin/RouteScanner.java b/core-maven-plugins/httproutes-generator-maven-plugin/src/main/java/com/netcracker/routes/gateway/plugin/RouteScanner.java
index 7a930684f..1c79e1b70 100644
--- a/core-maven-plugins/httproutes-generator-maven-plugin/src/main/java/com/netcracker/routes/gateway/plugin/RouteScanner.java
+++ b/core-maven-plugins/httproutes-generator-maven-plugin/src/main/java/com/netcracker/routes/gateway/plugin/RouteScanner.java
@@ -388,13 +388,10 @@ private boolean hasOwnRoute(ClassInfo classInfo) {
      * the order in which Spring's {@code AnnotationUtils.findAnnotation} searches
      */
     private static Stream<ClassInfo> hierarchy(ClassInfo classInfo) {
-        if (classInfo == null) {
-            return Stream.empty();
-        }
         return Stream.of(
                 Stream.of(classInfo),
                 classInfo.getInterfaces().directOnly().stream().flatMap(RouteScanner::hierarchy),
-                hierarchy(classInfo.getSuperclass())
+                Stream.ofNullable(classInfo.getSuperclass()).flatMap(RouteScanner::hierarchy)
         ).flatMap(Function.identity());
     }