diff --git a/source/net/filebot/similarity/EpisodeMetrics.java b/source/net/filebot/similarity/EpisodeMetrics.java
index d10550d5..d17af039 100644
--- a/source/net/filebot/similarity/EpisodeMetrics.java
+++ b/source/net/filebot/similarity/EpisodeMetrics.java
@@ -285,16 +285,12 @@ public class EpisodeMetrics {
 		}
 
 		protected String[] getNormalizedEffectiveIdentifiers(Object object) {
-			List<?> identifiers = getEffectiveIdentifiers(object);
-			String[] names = new String[identifiers.size()];
-
-			for (int i = 0; i < names.length; i++) {
-				names[i] = normalizeObject(identifiers.get(i));
-			}
-			return names;
+			return getEffectiveIdentifiers(object).stream().map(it -> {
+				return normalizeObject(it);
+			}).toArray(String[]::new);
 		}
 
-		protected List<?> getEffectiveIdentifiers(Object object) {
+		protected Collection<?> getEffectiveIdentifiers(Object object) {
 			if (object instanceof Episode) {
 				return ((Episode) object).getSeriesNames();
 			} else if (object instanceof Movie) {
@@ -302,7 +298,7 @@ public class EpisodeMetrics {
 			} else if (object instanceof File) {
 				return listPathTail((File) object, 3, true);
 			}
-			return singletonList(object);
+			return singleton(object);
 		}
 
 		@Override
diff --git a/source/net/filebot/web/Episode.java b/source/net/filebot/web/Episode.java
index 686ee4f4..eaa03e43 100644
--- a/source/net/filebot/web/Episode.java
+++ b/source/net/filebot/web/Episode.java
@@ -1,7 +1,6 @@
 package net.filebot.web;
 
 import java.io.Serializable;
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.LinkedHashSet;
 import java.util.List;
@@ -95,7 +94,7 @@ public class Episode implements Serializable {
 		return Arrays.asList(season, episode, special, absolute);
 	}
 
-	public List<String> getSeriesNames() {
+	public Set<String> getSeriesNames() {
 		Set<String> names = new LinkedHashSet<String>();
 		if (seriesName != null) {
 			names.add(seriesName);
@@ -110,7 +109,7 @@ public class Episode implements Serializable {
 				}
 			}
 		}
-		return new ArrayList<String>(names);
+		return names;
 	}
 
 	@Override
diff --git a/source/net/filebot/web/XEM.java b/source/net/filebot/web/XEM.java
index fcd5bc45..defb23c5 100644
--- a/source/net/filebot/web/XEM.java
+++ b/source/net/filebot/web/XEM.java
@@ -49,13 +49,14 @@ public enum XEM {
 			return Optional.empty();
 		}
 
-		String seriesName = episode.getSeriesName();
+		Set<String> seriesNames = episode.getSeriesNames();
 		Integer season = getSeason(episode.getSeason());
 
 		Map<String, List<String>> names = getNames(seriesId);
+		debug.finest(format("[XEM] %s", names));
 
 		Integer mappedSeason = names.entrySet().stream().filter(it -> {
-			return it.getValue().contains(seriesName);
+			return it.getValue().stream().anyMatch(seriesNames::contains);
 		}).map(it -> {
 			return matchInteger(it.getKey());
 		}).filter(Objects::nonNull).findFirst().orElse(season);