1 files changed, 2 insertions, 2 deletions
diff --git a/ninja/src/state.cc b/ninja/src/state.cc
index 9b6160bc2ca..33f8423312a 100644
--- a/ninja/src/state.cc
+++ b/ninja/src/state.cc
@@ -118,9 +118,9 @@ Node* State::GetNode(StringPiece path) {
   return node;
 }
 
-Node* State::LookupNode(StringPiece path) {
+Node* State::LookupNode(StringPiece path) const {
   METRIC_RECORD("lookup node");
-  Paths::iterator i = paths_.find(path);
+  Paths::const_iterator i = paths_.find(path);
   if (i != paths_.end())
     return i->second;
   return NULL;