1 files changed, 4 insertions, 1 deletions
diff --git a/EssentialsGroupManager/src/org/anjocaido/groupmanager/data/GroupVariables.java b/EssentialsGroupManager/src/org/anjocaido/groupmanager/data/GroupVariables.java
index e08d1db7d..588d50116 100644
--- a/EssentialsGroupManager/src/org/anjocaido/groupmanager/data/GroupVariables.java
+++ b/EssentialsGroupManager/src/org/anjocaido/groupmanager/data/GroupVariables.java
@@ -26,7 +26,8 @@ public class GroupVariables extends Variables implements Cloneable {
 	public GroupVariables(Group owner, Map<String, Object> varList) {
 
 		super(owner);
-		variables = varList;
+		variables.clear();
+		variables.putAll(varList);
 		if (variables.get("prefix") == null) {
 			variables.put("prefix", "");
 			owner.flagAsChanged();
@@ -54,9 +55,11 @@ public class GroupVariables extends Variables implements Cloneable {
 	protected GroupVariables clone(Group newOwner) {
 
 		GroupVariables clone = new GroupVariables(newOwner);
+		synchronized(variables) {
 		for (String key : variables.keySet()) {
 			clone.variables.put(key, variables.get(key));
 		}
+		}
 		newOwner.flagAsChanged();
 		return clone;
 	}