diff --git a/include/json/value.h b/include/json/value.h
index 0c507a34d..62a323b08 100644
--- a/include/json/value.h
+++ b/include/json/value.h
@@ -946,7 +946,7 @@ class JSON_API ValueIteratorBase {
   bool operator!=(const SelfType& other) const { return !isEqual(other); }
 
   difference_type operator-(const SelfType& other) const {
-    return computeDistance(other);
+    return other.computeDistance(*this);
   }
 
   /// Return either the index or the member name of the referenced value as a