2 files changed, 2 insertions, 1 deletions

diff --git a/nix/libstore/local-store.cc b/nix/libstore/local-store.cc
index 46ce649fb0b..6b5c388efc9 100644
--- a/nix/libstore/local-store.cc
+++ b/nix/libstore/local-store.cc
@@ -1208,7 +1208,7 @@ static std::string readAuthenticateReply(int fd)
     if (code == 0)
         return str;
     else
-        throw Error(str);
+        throw AuthenticationError(str);
 }
 
 /* Sign HASH with the key stored in file SECRETKEY.  Return the signature as a
diff --git a/nix/libstore/local-store.hh b/nix/libstore/local-store.hh
index 6a0def7412e..5dfe68f90a4 100644
--- a/nix/libstore/local-store.hh
+++ b/nix/libstore/local-store.hh
@@ -291,6 +291,7 @@ void canonicalisePathMetaData(const Path & path, uid_t fromUid);
 void canonicaliseTimestampAndPermissions(const Path & path);
 
 MakeError(PathInUse, Error);
+MakeError(AuthenticationError, Error);
 
 /* Size below which a file is not considered for deduplication.  */
 /* Any file smaller than this is not considered for deduplication.