diff --git a/pkgs/development/libraries/jsoncpp/default.nix b/pkgs/development/libraries/jsoncpp/default.nix
index 41e9a2d0a03..59572afc627 100644
--- a/pkgs/development/libraries/jsoncpp/default.nix
+++ b/pkgs/development/libraries/jsoncpp/default.nix
@@ -40,19 +40,13 @@ stdenv.mkDerivation rec {
     "-DBUILD_SHARED_LIBS=ON"
     "-DBUILD_OBJECT_LIBS=OFF"
     "-DJSONCPP_WITH_CMAKE_PACKAGE=ON"
+    "-DBUILD_STATIC_LIBS=${if enableStatic then "ON" else "OFF"}"
   ]
     # the test's won't compile if secureMemory is used because there is no
     # comparison operators and conversion functions between
     # std::basic_string<..., Json::SecureAllocator<char>> vs.
     # std::basic_string<..., [default allocator]>
-    ++ lib.optional ((stdenv.buildPlatform != stdenv.hostPlatform) || secureMemory) "-DJSONCPP_WITH_TESTS=OFF"
-    ++ lib.optional (!enableStatic) "-DBUILD_STATIC_LIBS=OFF";
-
-  # this is fixed and no longer necessary in 1.9.5 but there they use
-  # memset_s without switching to a different c++ standard in the cmake files
-  postInstall = lib.optionalString enableStatic ''
-    (cd $out/lib && ln -sf libjsoncpp_static.a libjsoncpp.a)
-  '';
+    ++ lib.optional ((stdenv.buildPlatform != stdenv.hostPlatform) || secureMemory) "-DJSONCPP_WITH_TESTS=OFF";
 
   meta = with lib; {
     homepage = "https://github.com/open-source-parsers/jsoncpp";