diff --git a/pkgs/by-name/ad/adolc/package.nix b/pkgs/by-name/ad/adolc/package.nix
index 31955562a767..96ac820471a2 100644
--- a/pkgs/by-name/ad/adolc/package.nix
+++ b/pkgs/by-name/ad/adolc/package.nix
@@ -16,7 +16,10 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-oU229SuOl/gHoRT8kiWfd5XFiByjeypgdVWFLMYFHfA=";
   };
 
-  configureFlags = [ "--with-openmp-flag=-fopenmp" ];
+  configureFlags = [
+    "--with-openmp-flag=-fopenmp"
+    "--enable-sparse"
+  ];
 
   buildInputs = lib.optional stdenv.cc.isClang llvmPackages.openmp;