diff --git a/src/main/java/org/aksw/iguana/cc/query/selector/impl/LinearQuerySelector.java b/src/main/java/org/aksw/iguana/cc/query/selector/impl/LinearQuerySelector.java
index ac3001ed5..60c0ae0ed 100644
--- a/src/main/java/org/aksw/iguana/cc/query/selector/impl/LinearQuerySelector.java
+++ b/src/main/java/org/aksw/iguana/cc/query/selector/impl/LinearQuerySelector.java
@@ -32,6 +32,7 @@ public int getNextIndex() {
 
     /**
      * Return the current index. This is the index of the last returned query.
+     * If no query was returned yet, the method will return -1.
      *
      * @return the current index
      */