diff --git a/apps/opencs/model/filter/booleannode.cpp b/apps/opencs/model/filter/booleannode.cpp
index cea130d241..2f521ed068 100644
--- a/apps/opencs/model/filter/booleannode.cpp
+++ b/apps/opencs/model/filter/booleannode.cpp
@@ -1,7 +1,7 @@
 
 #include "booleannode.hpp"
 
-CSMFilter::BooleanNode::BooleanNode (bool true_) : mTrue (true) {}
+CSMFilter::BooleanNode::BooleanNode (bool true_) : mTrue (true_) {}
 
 bool CSMFilter::BooleanNode::test (const CSMWorld::IdTable& table, int row,
     const std::map<std::string, const Node *>& otherFilters,