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-rw-r--r--src/nix-store/dotgraph.cc3
1 files changed, 1 insertions, 2 deletions
diff --git a/src/nix-store/dotgraph.cc b/src/nix-store/dotgraph.cc
index 51dedcf0a092..abdfa5e58f93 100644
--- a/src/nix-store/dotgraph.cc
+++ b/src/nix-store/dotgraph.cc
@@ -47,8 +47,7 @@ static string makeNode(const string & id, const string & label,
 static string symbolicName(const string & path)
 {
     string p = baseNameOf(path);
-    int dash = p.find('-');
-    return string(p, dash + 1);
+    return string(p, p.find('-') + 1);
 }