diff --git a/pkgs/development/tools/oq/default.nix b/pkgs/development/tools/oq/default.nix
index 1fc839577c5..236cb8bead7 100644
--- a/pkgs/development/tools/oq/default.nix
+++ b/pkgs/development/tools/oq/default.nix
@@ -14,8 +14,14 @@ crystal.buildCrystalPackage rec {
   nativeBuildInputs = [ makeWrapper ];
   buildInputs = [ jq libxml2 ];
 
+  format = "crystal";
   crystalBinaries.oq.src = "src/oq_cli.cr";
 
+  preCheck = ''
+    mkdir bin
+    cp oq bin/oq
+  '';
+
   postInstall = ''
     wrapProgram "$out/bin/oq" \
       --prefix PATH : "${lib.makeBinPath [ jq ]}"