diff --git a/pkgs/development/libraries/lucene++/default.nix b/pkgs/development/libraries/lucene++/default.nix
index ef55541ed777..96be84ee2a7e 100644
--- a/pkgs/development/libraries/lucene++/default.nix
+++ b/pkgs/development/libraries/lucene++/default.nix
@@ -14,13 +14,13 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ cmake ];
   buildInputs = [ boost gtest zlib ];
 
-  doCheck = true;
-
   postPatch = ''
-     substituteInPlace src/test/CMakeLists.txt \
-            --replace "add_subdirectory(gtest)" ""
+    substituteInPlace src/test/CMakeLists.txt \
+      --replace "add_subdirectory(gtest)" ""
   '';
 
+  doCheck = true;
+
   checkPhase = ''
     runHook preCheck
     LD_LIBRARY_PATH=$PWD/src/contrib:$PWD/src/core \
@@ -30,6 +30,7 @@ stdenv.mkDerivation rec {
 
   postInstall = ''
     mv $out/include/pkgconfig $out/lib/
+    cp $src/src/contrib/include/*h $out/include/lucene++/
   '';
 
   meta = {