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-rw-r--r--src/libstore/local-store.cc4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index d7cd0b088d98..9199b12063a0 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -602,10 +602,10 @@ static void canonicalisePathMetaData_(const Path & path, uid_t fromUid, InodesSe
        users group); we check for this case below. */
     if (st.st_uid != geteuid()) {
 #if HAVE_LCHOWN
-        if (lchown(path.c_str(), geteuid(), (gid_t) -1) == -1)
+        if (lchown(path.c_str(), geteuid(), getegid()) == -1)
 #else
         if (!S_ISLNK(st.st_mode) &&
-            chown(path.c_str(), geteuid(), (gid_t) -1) == -1)
+            chown(path.c_str(), geteuid(), getegid()) == -1)
 #endif
             throw SysError(format("changing owner of ‘%1%’ to %2%")
                 % path % geteuid());