1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/applications/networking/mailreaders/lumail/default.nix b/pkgs/applications/networking/mailreaders/lumail/default.nix
index 0a670b2b9a6..44b97fb3793 100644
--- a/pkgs/applications/networking/mailreaders/lumail/default.nix
+++ b/pkgs/applications/networking/mailreaders/lumail/default.nix
@@ -52,7 +52,7 @@ stdenv.mkDerivation {
     sed -e "s|^#\!\(.*/perl.*\)$|#\!\1$perlFlags|" -i perl.d/imap-proxy
   '';
 
-  buildFlags = if debugBuild then "lumail2-debug" else "";
+  buildFlags = stdenv.lib.optional debugBuild "lumail2-debug";
 
   installPhase = ''
     mkdir -p $out/bin || true