diff --git a/extractor/extraction_containers.cpp b/extractor/extraction_containers.cpp
index caca05ccb..c661ba2c8 100644
--- a/extractor/extraction_containers.cpp
+++ b/extractor/extraction_containers.cpp
@@ -320,6 +320,7 @@ void ExtractionContainers::PrepareEdges()
         // skip invalid edges
         if (all_edges_list[i].result.target == SPECIAL_NODEID)
         {
+            ++i;
             continue;
         }