X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fsone%2Fcore%2FCore.java;h=4d39c101e9d6a58326d83c5e8283c320c2a3d493;hb=3c8d2fc3f4b11f8ccd7fcce6339ba1a34c055ac5;hp=cdb7feb77688a281b4e93456d08220e9004d3d13;hpb=6d022bf598dea2aabc5e1c2676975cd6565c5b0c;p=Sone.git

diff --git a/src/main/java/net/pterodactylus/sone/core/Core.java b/src/main/java/net/pterodactylus/sone/core/Core.java
index cdb7feb..4d39c10 100644
--- a/src/main/java/net/pterodactylus/sone/core/Core.java
+++ b/src/main/java/net/pterodactylus/sone/core/Core.java
@@ -352,7 +352,9 @@ public class Core extends AbstractService implements SoneProvider, PostProvider,
 	 * @return All Sones
 	 */
 	public Set<Sone> getSones() {
-		return new HashSet<Sone>(sones.values());
+		synchronized (sones) {
+			return Collections.unmodifiableCollection(sones.values());
+		}
 	}
 
 	/**