diff --git a/apps/openmw/mwlua/factionbindings.cpp b/apps/openmw/mwlua/factionbindings.cpp
index a509a45487e..a43cec874fb 100644
--- a/apps/openmw/mwlua/factionbindings.cpp
+++ b/apps/openmw/mwlua/factionbindings.cpp
@@ -23,6 +23,7 @@ namespace
             : ESM::RankData(data)
             , mRankName(rankName)
             , mFactionId(factionId)
+            , mRankIndex(rankIndex)
         {
         }
     };