diff --git a/src/main/java/net/tiagofar78/prisonescape/managers/ConfigManager.java b/src/main/java/net/tiagofar78/prisonescape/managers/ConfigManager.java
index 7d496f0e..8e630dc7 100644
--- a/src/main/java/net/tiagofar78/prisonescape/managers/ConfigManager.java
+++ b/src/main/java/net/tiagofar78/prisonescape/managers/ConfigManager.java
@@ -260,7 +260,7 @@ public int getDelayBetweenAnnouncements() {
     }
 
     public List<String> getAvailableLanguages() {
-        return _availableLanguages;
+        return new ArrayList<>(_availableLanguages);
     }
 
     public String getDefaultLanguage() {
diff --git a/src/main/java/net/tiagofar78/prisonescape/managers/MessageLanguageManager.java b/src/main/java/net/tiagofar78/prisonescape/managers/MessageLanguageManager.java
index 365750c0..1bf9509c 100644
--- a/src/main/java/net/tiagofar78/prisonescape/managers/MessageLanguageManager.java
+++ b/src/main/java/net/tiagofar78/prisonescape/managers/MessageLanguageManager.java
@@ -532,7 +532,7 @@ public String getPlayerWasNeverInGameMessage() {
 //	########################################
 
     public List<String> getUsage() {
-        return _usageMessage;
+        return new ArrayList<>(_usageMessage);
     }
 
     public String getStartCommandUsage() {