From 07a0b8ca671669794f51f9d886397bf038a8881e Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Wed, 1 Mar 2017 14:52:16 +0100
Subject: [PATCH] Tweak message

---
 src/libstore/local-store.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index bc63955af..63f069c2f 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -920,7 +920,7 @@ void LocalStore::addToStore(const ValidPathInfo & info, const ref<std::string> &
             info.path % info.narHash.to_string() % h.to_string());
 
     if (requireSigs && !dontCheckSigs && !info.checkSignatures(*this, publicKeys))
-        throw Error(format("cannot import path ‘%s’ because it lacks a valid signature") % info.path);
+        throw Error("cannot add path ‘%s’ because it lacks a valid signature", info.path);
 
     addTempRoot(info.path);