diff --git a/src/XMPPJID.m b/src/XMPPJID.m
index 5da7f8c..4cf8286 100644
--- a/src/XMPPJID.m
+++ b/src/XMPPJID.m
@@ -54,8 +54,8 @@
 		return nil;
 	}
 
-	nodesep = [str indexOfFirstOccurrenceOfString: @"@"];
-	resourcesep = [str indexOfFirstOccurrenceOfString: @"/"];
+	nodesep = [str rangeOfString: @"@"].location;
+	resourcesep = [str rangeOfString: @"/"].location;
 
 	if (nodesep == SIZE_MAX)
 		[self setNode: nil];