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-rw-r--r--pkgs/tools/security/neopg/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/tools/security/neopg/default.nix b/pkgs/tools/security/neopg/default.nix
index 5e26bcf6759..c58772346ee 100644
--- a/pkgs/tools/security/neopg/default.nix
+++ b/pkgs/tools/security/neopg/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
   dontUseCmakeBuildDir = true;
 
   preCheck = ''
-    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(pwd)/3rdparty/googletest/googletest:$(pwd)/neopg
+    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}$(pwd)/3rdparty/googletest/googletest:$(pwd)/neopg
   '';
 
   meta = with stdenv.lib; {