diff --git a/modules/fieldClassifier/README.md b/modules/fieldClassifier/README.md
index c4693ca..f7403a3 100644
--- a/modules/fieldClassifier/README.md
+++ b/modules/fieldClassifier/README.md
@@ -82,6 +82,10 @@ module takes the following parameters:
   * Specify if the geolocation should be done for source, destination or both IP addresses. Possible
     values are `src`, `dst` or `both`. Default is `both`.
 
+* `-c`, `--cacheCapacity` number
+
+  * Specify the capacity of the internal cache (number of entries). Default is `4000`.
+
 ## Geolite parameters
 
 *  `--pathGeolite` path
diff --git a/modules/fieldClassifier/src/fieldClassifier.cpp b/modules/fieldClassifier/src/fieldClassifier.cpp
index 10b84fd..123995d 100644
--- a/modules/fieldClassifier/src/fieldClassifier.cpp
+++ b/modules/fieldClassifier/src/fieldClassifier.cpp
@@ -12,8 +12,6 @@
 #include "plugins/plugin.hpp"
 #include <stdexcept>
 
-extern int g_debug_level;
-
 namespace NFieldClassifier {
 void FieldClassifier::handleParams(int argc, char** argv, argparse::ArgumentParser& parser)
 {
@@ -412,13 +410,9 @@ void FieldClassifier::fillInputFieldsToOutput(
 			break;
 		}
 		case DataType::BYTES: {
-			// Nemea::UnirecArray<std::byte> const arr
-			// 	= input->getFieldAsUnirecArray<std::byte>(fieldId);
-			// output->setFieldFromUnirecArray<std::byte>(arr, fieldId);
-
-			// std::byte value = input->getFieldAsType<std::byte>(fieldId);
-			// output->setFieldFromType<std::byte>(value, fieldId);
-
+			Nemea::UnirecArray<std::byte> const arr
+				= input->getFieldAsUnirecArray<std::byte>(fieldId);
+			output->setFieldFromUnirecArray<std::byte>(arr, fieldId);
 			break;
 		}
 		case DataType::A_INT8: {
diff --git a/modules/fieldClassifier/src/plugins/asn.cpp b/modules/fieldClassifier/src/plugins/asn.cpp
index 56280f2..98ad30a 100644
--- a/modules/fieldClassifier/src/plugins/asn.cpp
+++ b/modules/fieldClassifier/src/plugins/asn.cpp
@@ -30,7 +30,7 @@ void ASN::storeParameters(argparse::ArgumentParser& parser)
 FieldDefinition ASN::defineFields()
 {
 	// list of all fields provided by this plugin
-	FieldDefinition allFields = {{"ASN", DataType::UINT16}, {"ASO", DataType::STRING}};
+	FieldDefinition allFields = {{"ASN", DataType::UINT32}, {"ASO", DataType::STRING}};
 
 	return allFields;
 }
@@ -53,7 +53,7 @@ bool ASN::getData(DataMap& dataMap, std::string& ipAddr)
 	}
 	if (dataMap.find("ASN") != dataMap.end()) {
 		err = MMDB_get_value(&result.entry, &entryData, "autonomous_system_number", NULL);
-		dataMap.at("ASN") = checkEntryData() ? entryData.uint16 : EMPTY_UINT16;
+		dataMap.at("ASN") = checkEntryData() ? entryData.uint32 : EMPTY_UINT16;
 	}
 	if (dataMap.find("ASO") != dataMap.end()) {
 		err = MMDB_get_value(&result.entry, &entryData, "autonomous_system_organization", NULL);