diff --git a/src/main/java/org/gcube/accounting/datamodel/validations/validators/Harmonizer.java b/src/main/java/org/gcube/accounting/datamodel/validations/validators/Harmonizer.java
index 374a51c..0e54b62 100644
--- a/src/main/java/org/gcube/accounting/datamodel/validations/validators/Harmonizer.java
+++ b/src/main/java/org/gcube/accounting/datamodel/validations/validators/Harmonizer.java
@@ -48,16 +48,21 @@ public class Harmonizer implements FieldAction {
 		
 		List<MatcherReplace> matcherReplaceList = RegexRulesAggregator.getInstance().getMatcherReplaceList();
 		
+		String calledMethod = (String) value;
+		
 		for(MatcherReplace matcherReplace : matcherReplaceList) {
-			Replace replace = matcherReplace.check(serviceClass, serviceName, (String) value);
+			Replace replace = matcherReplace.check(serviceClass, serviceName, calledMethod);
 			if(replace != null) {
-				serviceUsageRecord.setServiceClass(replace.getServiceClass());
-				serviceUsageRecord.setServiceName(replace.getServiceName());
-				return replace.getCalledMethod();
+				serviceClass = replace.getServiceClass();
+				serviceName = replace.getServiceName();
+				calledMethod = replace.getCalledMethod();
 			}
 		}
 		
-		return value;
+		serviceUsageRecord.setServiceClass(serviceClass);
+		serviceUsageRecord.setServiceName(serviceName);
+		
+		return calledMethod;
 	}
 
 }
diff --git a/src/test/java/org/gcube/accounting/datamodel/validations/validators/TestRules.java b/src/test/java/org/gcube/accounting/datamodel/validations/validators/TestRules.java
index 52dd266..bd48ce8 100644
--- a/src/test/java/org/gcube/accounting/datamodel/validations/validators/TestRules.java
+++ b/src/test/java/org/gcube/accounting/datamodel/validations/validators/TestRules.java
@@ -219,8 +219,8 @@ public class TestRules extends ContextTest {
 	public void testSingleRule() throws Exception {
 		allRules();
 		File rulesDirectory = getRulesDirectory();
-		File rulesDirFile = new File(rulesDirectory, "SmartExecutor");
-		File ruleFile = new File(rulesDirFile, "SmartExecutor-getAvailablePlugins.json");
+		File rulesDirFile = new File(rulesDirectory, "WhnManager");
+		File ruleFile = new File(rulesDirFile, "WhnManager-OTHER.json");
 		testRule(ruleFile);
 	}
 	
diff --git a/src/test/resources/rules/SmartExecutor/SmartExecutor-OTHER.json b/src/test/resources/rules/SmartExecutor/SmartExecutor-OTHER.json
index 03ed8ad..0612233 100644
--- a/src/test/resources/rules/SmartExecutor/SmartExecutor-OTHER.json
+++ b/src/test/resources/rules/SmartExecutor/SmartExecutor-OTHER.json
@@ -2,7 +2,7 @@
 	"match": {
 		"serviceClassRegex": "VREManagement",
 		"serviceNameRegex": "(SmartExecutor)|(smart-executor)",
-		"calledMethodRegex": ".*(UNKNOWN)|(OTHER).*"
+		"calledMethodRegex": "^((UNKNOWN)|(OTHER))$"
 	},
 	"replace": {
 		"serviceClass": "VREManagement",
diff --git a/src/test/resources/rules/WhnManager/WhnManager-OTHER.csv b/src/test/resources/rules/WhnManager/WhnManager-OTHER.csv
new file mode 100644
index 0000000..65c9920
--- /dev/null
+++ b/src/test/resources/rules/WhnManager/WhnManager-OTHER.csv
@@ -0,0 +1,2 @@
+VREManagement,WhnManager,OTHER
+VREManagement,WhnManager,gcube/vremanagement/ws/whnmanager
\ No newline at end of file
diff --git a/src/test/resources/rules/WhnManager/WhnManager-OTHER.json b/src/test/resources/rules/WhnManager/WhnManager-OTHER.json
new file mode 100644
index 0000000..365d57f
--- /dev/null
+++ b/src/test/resources/rules/WhnManager/WhnManager-OTHER.json
@@ -0,0 +1,12 @@
+{
+	"match": {
+		"serviceClassRegex": "VREManagement",
+		"serviceNameRegex": "WhnManager",
+		"calledMethodRegex": "(OTHER)|((\/){0,1}gcube\/vremanagement\/ws\/whnmanager)"
+	},
+	"replace": {
+		"serviceClass": "VREManagement",
+		"serviceName": "WhnManager",
+		"calledMethod": "OTHER"
+	}
+}
\ No newline at end of file