diff --git a/pkgs/games/cataclysm-dda/common.nix b/pkgs/games/cataclysm-dda/common.nix
index ccba8e23d5a..33790cf8800 100644
--- a/pkgs/games/cataclysm-dda/common.nix
+++ b/pkgs/games/cataclysm-dda/common.nix
@@ -39,6 +39,8 @@ stdenv.mkDerivation {
 
   buildInputs = cursesDeps ++ optionals tiles tilesDeps;
 
+  enableParallelBuilding = true;
+
   postPatch = ''
     patchShebangs .
 
@@ -49,7 +51,7 @@ stdenv.mkDerivation {
   '';
 
   makeFlags = [
-    "PREFIX=$(out)" "LANGUAGES=all"
+    "PREFIX=$(out)" "LANGUAGES=all" "RUNTESTS=0"
     (if useXdgDir then "USE_XDG_DIR=1" else "USE_HOME_DIR=1")
   ] ++ optionals (!debug) [
     "RELEASE=1"