diff --git a/lib/Basics/DataProtector.h b/lib/Basics/DataProtector.h
index 480c50da35..4f42b2ed7d 100644
--- a/lib/Basics/DataProtector.h
+++ b/lib/Basics/DataProtector.h
@@ -144,7 +144,7 @@ namespace triagens {
 
           if (id < 0) {
             id = _last++;
-            if (_last > DATA_PROTECTOR_MULTIPLICITY) {
+            if (_last >= DATA_PROTECTOR_MULTIPLICITY) {
               _last = 0;
             }
             _mySlot = id;