1 files changed, 2 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/tools/networking/ssmtp/default.nix b/nixpkgs/pkgs/tools/networking/ssmtp/default.nix
index ebe31dc8b5a9..81da427a52cf 100644
--- a/nixpkgs/pkgs/tools/networking/ssmtp/default.nix
+++ b/nixpkgs/pkgs/tools/networking/ssmtp/default.nix
@@ -30,13 +30,13 @@ stdenv.mkDerivation {
         --replace '$(INSTALL) -s' '$(INSTALL) -s --strip-program $(STRIP)'
     '';
 
-  installFlags = "etcdir=$(out)/etc";
+  installFlags = [ "etcdir=$(out)/etc" ];
 
   installTargets = [ "install" "install-sendmail" ];
 
   buildInputs = stdenv.lib.optional tlsSupport openssl;
 
-  NIX_LDFLAGS = stdenv.lib.optional tlsSupport [ "-lcrypto" ];
+  NIX_LDFLAGS = stdenv.lib.optionalString tlsSupport "-lcrypto";
 
   meta = with stdenv.lib; {
     platforms = platforms.linux;