diff --git a/AssemblerLib/LocalToGlobalIndexMap.h b/AssemblerLib/LocalToGlobalIndexMap.h
index 768bdf18dc535a5ee422d204e346c94c9aa9320d..3e87946e66a4e1e7fb0c407fbe30ada089e6a892 100644
--- a/AssemblerLib/LocalToGlobalIndexMap.h
+++ b/AssemblerLib/LocalToGlobalIndexMap.h
@@ -43,7 +43,7 @@ public:
     }
 
     LocalToGlobalIndexMap(std::vector<LineIndex> const& rows)
-        : LocalToGlobalIndexMap(rows, rows)
+        : _rows(rows), _columns(rows)
     { }
 
     std::size_t size() const